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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Database.HaskellDB.Sql.Default</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : Daan Leijen (c) 1999, daan@cs.uu.nl</span>
<a name="line-5"></a><span class='hs-comment'>-- HWT Group (c) 2003, haskelldb-users@lists.sourceforge.net</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD-style</span>
<a name="line-7"></a><span class='hs-comment'>-- </span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : haskelldb-users@lists.sourceforge.net</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : experimental</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : non-portable</span>
<a name="line-11"></a><span class='hs-comment'>-- </span>
<a name="line-12"></a><span class='hs-comment'>-- Default SQL generation.</span>
<a name="line-13"></a><span class='hs-comment'>-- </span>
<a name="line-14"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>Sql</span><span class='hs-varop'>.</span><span class='hs-conid'>Default</span> <span class='hs-layout'>(</span>
<a name="line-16"></a> <span class='hs-varid'>mkSqlGenerator</span><span class='hs-layout'>,</span>
<a name="line-17"></a> <span class='hs-varid'>defaultSqlGenerator</span><span class='hs-layout'>,</span>
<a name="line-18"></a>
<a name="line-19"></a> <span class='hs-varid'>defaultSqlQuery</span><span class='hs-layout'>,</span>
<a name="line-20"></a> <span class='hs-varid'>defaultSqlUpdate</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-varid'>defaultSqlDelete</span><span class='hs-layout'>,</span>
<a name="line-22"></a> <span class='hs-varid'>defaultSqlInsert</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>defaultSqlInsertQuery</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>defaultSqlCreateDB</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-varid'>defaultSqlCreateTable</span><span class='hs-layout'>,</span>
<a name="line-26"></a> <span class='hs-varid'>defaultSqlDropDB</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-varid'>defaultSqlDropTable</span><span class='hs-layout'>,</span>
<a name="line-28"></a>
<a name="line-29"></a> <span class='hs-varid'>defaultSqlEmpty</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>defaultSqlTable</span><span class='hs-layout'>,</span>
<a name="line-31"></a> <span class='hs-varid'>defaultSqlProject</span><span class='hs-layout'>,</span>
<a name="line-32"></a> <span class='hs-varid'>defaultSqlRestrict</span><span class='hs-layout'>,</span>
<a name="line-33"></a> <span class='hs-varid'>defaultSqlBinary</span><span class='hs-layout'>,</span>
<a name="line-34"></a> <span class='hs-varid'>defaultSqlGroup</span><span class='hs-layout'>,</span>
<a name="line-35"></a> <span class='hs-varid'>defaultSqlSpecial</span><span class='hs-layout'>,</span>
<a name="line-36"></a>
<a name="line-37"></a> <span class='hs-varid'>defaultSqlExpr</span><span class='hs-layout'>,</span>
<a name="line-38"></a> <span class='hs-varid'>defaultSqlLiteral</span><span class='hs-layout'>,</span>
<a name="line-39"></a> <span class='hs-varid'>defaultSqlType</span><span class='hs-layout'>,</span>
<a name="line-40"></a> <span class='hs-varid'>defaultSqlQuote</span><span class='hs-layout'>,</span>
<a name="line-41"></a>
<a name="line-42"></a> <span class='hs-comment'>-- * Utilities</span>
<a name="line-43"></a> <span class='hs-varid'>toSqlSelect</span>
<a name="line-44"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-45"></a>
<a name="line-46"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>intersect</span><span class='hs-layout'>)</span>
<a name="line-47"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>PrimQuery</span>
<a name="line-48"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>FieldType</span>
<a name="line-49"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>Sql</span>
<a name="line-50"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Database</span><span class='hs-varop'>.</span><span class='hs-conid'>HaskellDB</span><span class='hs-varop'>.</span><span class='hs-conid'>Sql</span><span class='hs-varop'>.</span><span class='hs-conid'>Generate</span>
<a name="line-51"></a>
<a name="line-52"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Locale</span>
<a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Time</span>
<a name="line-54"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>catMaybes</span><span class='hs-layout'>)</span>
<a name="line-55"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>nubBy</span><span class='hs-layout'>)</span>
<a name="line-56"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Map</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromList</span><span class='hs-layout'>,</span> <span class='hs-varid'>lookup</span><span class='hs-layout'>)</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="mkSqlGenerator"></a><span class='hs-definition'>mkSqlGenerator</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-59"></a><span class='hs-definition'>mkSqlGenerator</span> <span class='hs-varid'>gen</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-60"></a> <span class='hs-layout'>{</span>
<a name="line-61"></a> <span class='hs-varid'>sqlQuery</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlQuery</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-62"></a> <span class='hs-varid'>sqlUpdate</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlUpdate</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-63"></a> <span class='hs-varid'>sqlDelete</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlDelete</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-64"></a> <span class='hs-varid'>sqlInsert</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlInsert</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-65"></a> <span class='hs-varid'>sqlInsertQuery</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlInsertQuery</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-66"></a> <span class='hs-varid'>sqlCreateDB</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlCreateDB</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-67"></a> <span class='hs-varid'>sqlCreateTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlCreateTable</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-68"></a> <span class='hs-varid'>sqlDropDB</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlDropDB</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-69"></a> <span class='hs-varid'>sqlDropTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlDropTable</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-70"></a>
<a name="line-71"></a> <span class='hs-varid'>sqlEmpty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlEmpty</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-72"></a> <span class='hs-varid'>sqlTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlTable</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-73"></a> <span class='hs-varid'>sqlProject</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlProject</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-74"></a> <span class='hs-varid'>sqlRestrict</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlRestrict</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-75"></a> <span class='hs-varid'>sqlBinary</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlBinary</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-76"></a> <span class='hs-varid'>sqlGroup</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlGroup</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-77"></a> <span class='hs-varid'>sqlSpecial</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlSpecial</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-78"></a>
<a name="line-79"></a> <span class='hs-varid'>sqlExpr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlExpr</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-80"></a> <span class='hs-varid'>sqlLiteral</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlLiteral</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-81"></a> <span class='hs-varid'>sqlType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlType</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-82"></a> <span class='hs-varid'>sqlQuote</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultSqlQuote</span> <span class='hs-varid'>gen</span>
<a name="line-83"></a> <span class='hs-layout'>}</span>
<a name="line-84"></a>
<a name="line-85"></a><a name="defaultSqlGenerator"></a><span class='hs-definition'>defaultSqlGenerator</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-86"></a><span class='hs-definition'>defaultSqlGenerator</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkSqlGenerator</span> <span class='hs-varid'>defaultSqlGenerator</span>
<a name="line-87"></a>
<a name="line-88"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-89"></a><span class='hs-comment'>-- * Types</span>
<a name="line-90"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-91"></a>
<a name="line-92"></a><a name="defaultSqlType"></a><span class='hs-definition'>defaultSqlType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FieldType</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlType</span>
<a name="line-93"></a><span class='hs-definition'>defaultSqlType</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span>
<a name="line-94"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>of</span>
<a name="line-95"></a> <span class='hs-conid'>StringT</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlType</span> <span class='hs-str'>"text"</span>
<a name="line-96"></a> <span class='hs-conid'>IntT</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlType</span> <span class='hs-str'>"int"</span>
<a name="line-97"></a> <span class='hs-conid'>IntegerT</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlType</span> <span class='hs-str'>"bigint"</span>
<a name="line-98"></a> <span class='hs-conid'>DoubleT</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlType</span> <span class='hs-str'>"double precision"</span>
<a name="line-99"></a> <span class='hs-conid'>BoolT</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlType</span> <span class='hs-str'>"bit"</span>
<a name="line-100"></a> <span class='hs-conid'>CalendarTimeT</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlType</span> <span class='hs-str'>"timestamp with time zone"</span>
<a name="line-101"></a> <span class='hs-conid'>BStrT</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlType1</span> <span class='hs-str'>"varchar"</span> <span class='hs-varid'>a</span>
<a name="line-102"></a>
<a name="line-103"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-104"></a><span class='hs-comment'>-- * SELECT</span>
<a name="line-105"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="defaultSqlQuery"></a><span class='hs-comment'>-- | Creates a 'SqlSelect' based on the 'PrimQuery' supplied.</span>
<a name="line-108"></a><span class='hs-comment'>-- Corresponds to the SQL statement SELECT.</span>
<a name="line-109"></a><span class='hs-definition'>defaultSqlQuery</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PrimQuery</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-110"></a><span class='hs-definition'>defaultSqlQuery</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>query</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldPrimQuery</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlEmpty</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-111"></a> <span class='hs-varid'>sqlTable</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-112"></a> <span class='hs-varid'>sqlProject</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-113"></a> <span class='hs-varid'>sqlRestrict</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-114"></a> <span class='hs-varid'>sqlBinary</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-115"></a> <span class='hs-varid'>sqlGroup</span> <span class='hs-varid'>gen</span><span class='hs-layout'>,</span>
<a name="line-116"></a> <span class='hs-varid'>sqlSpecial</span> <span class='hs-varid'>gen</span><span class='hs-layout'>)</span> <span class='hs-varid'>query</span>
<a name="line-117"></a>
<a name="line-118"></a><a name="defaultSqlEmpty"></a><span class='hs-definition'>defaultSqlEmpty</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-119"></a><span class='hs-definition'>defaultSqlEmpty</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlEmpty</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="defaultSqlTable"></a><span class='hs-definition'>defaultSqlTable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TableName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Scheme</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-122"></a><span class='hs-definition'>defaultSqlTable</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>name</span> <span class='hs-varid'>schema</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlTable</span> <span class='hs-varid'>name</span>
<a name="line-123"></a>
<a name="line-124"></a><a name="defaultSqlProject"></a><span class='hs-definition'>defaultSqlProject</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Assoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-125"></a><span class='hs-definition'>defaultSqlProject</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>assoc</span> <span class='hs-varid'>q</span>
<a name="line-126"></a> <span class='hs-comment'>-- This mess ensures we do not create another layer of SELECT when</span>
<a name="line-127"></a> <span class='hs-comment'>-- dealing with GROUP BY phrases. If the select being built is a</span>
<a name="line-128"></a> <span class='hs-comment'>-- real select (not a table or binary operation) and all columns to</span>
<a name="line-129"></a> <span class='hs-comment'>-- be projected are just attributes (i.e., they copy column names</span>
<a name="line-130"></a> <span class='hs-comment'>-- but do no computation), then we do not need to create another</span>
<a name="line-131"></a> <span class='hs-comment'>-- layer of SELECT. We will re-use the existing select.</span>
<a name="line-132"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>all</span> <span class='hs-varid'>isAttr</span> <span class='hs-varid'>assoc</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>validSelect</span> <span class='hs-varid'>q</span> <span class='hs-keyglyph'>=</span>
<a name="line-133"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>groupables</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>groupableSqlColumns</span> <span class='hs-varop'>.</span> <span class='hs-varid'>attrs</span> <span class='hs-varop'>$</span> <span class='hs-varid'>q</span> <span class='hs-keyword'>of</span>
<a name="line-134"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-135"></a> <span class='hs-varid'>gs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Columns</span> <span class='hs-varid'>gs</span><span class='hs-layout'>)</span>
<a name="line-136"></a> <span class='hs-comment'>-- Looks at SqlSelect columns and determines if they need to</span>
<a name="line-137"></a> <span class='hs-comment'>-- be grouped. Not the sames as groupableProjects because this</span>
<a name="line-138"></a> <span class='hs-comment'>-- operates on values from a SqlSelect, not PrimQuery.</span>
<a name="line-139"></a> <span class='hs-varid'>groupableSqlColumns</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlColumn</span><span class='hs-layout'>,</span><span class='hs-conid'>SqlExpr</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlColumn</span><span class='hs-layout'>,</span><span class='hs-conid'>SqlExpr</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-140"></a> <span class='hs-varid'>groupableSqlColumns</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-varid'>groupable</span>
<a name="line-141"></a> <span class='hs-keyword'>where</span>
<a name="line-142"></a> <span class='hs-varid'>id2</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t</span>
<a name="line-143"></a> <span class='hs-varid'>const2</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t</span>
<a name="line-144"></a> <span class='hs-comment'>-- determine if a sql expression should be </span>
<a name="line-145"></a> <span class='hs-comment'>-- placed in a group by clause. Only columns, non-aggregate</span>
<a name="line-146"></a> <span class='hs-comment'>-- functions and expressions involving either are</span>
<a name="line-147"></a> <span class='hs-comment'>-- groupable. Constants are not groupable. If an expression</span>
<a name="line-148"></a> <span class='hs-comment'>-- contains any groupable values, then whole expression is groupable.</span>
<a name="line-149"></a> <span class='hs-varid'>groupable</span> <span class='hs-layout'>(</span><span class='hs-varid'>col</span><span class='hs-layout'>,</span> <span class='hs-varid'>expr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldSqlExpr</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-conid'>True</span> <span class='hs-comment'>-- column</span>
<a name="line-150"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>left</span> <span class='hs-varid'>right</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>left</span> <span class='hs-varop'>||</span> <span class='hs-varid'>right</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- binary</span>
<a name="line-151"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>const2</span> <span class='hs-conid'>False</span> <span class='hs-comment'>-- PrefixSqlExpr </span>
<a name="line-152"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>const2</span> <span class='hs-conid'>False</span> <span class='hs-comment'>-- PostfixSqlExpr</span>
<a name="line-153"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>const2</span> <span class='hs-conid'>True</span> <span class='hs-comment'>-- FunSqlExpr</span>
<a name="line-154"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>const2</span> <span class='hs-conid'>False</span> <span class='hs-comment'>-- AggrFunSqlExpr</span>
<a name="line-155"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>const</span> <span class='hs-conid'>False</span> <span class='hs-comment'>-- ConstSqlExpr</span>
<a name="line-156"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>cs</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>and</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>uncurry</span> <span class='hs-layout'>(</span><span class='hs-varop'>||</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-varop'>||</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- CaseSqlExpr</span>
<a name="line-157"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>and</span> <span class='hs-comment'>-- ListSqlExpr</span>
<a name="line-158"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>const</span> <span class='hs-conid'>False</span> <span class='hs-comment'>-- ExistsSqlExpr</span>
<a name="line-159"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>const2</span> <span class='hs-conid'>False</span> <span class='hs-comment'>-- ParamSqlExpr</span>
<a name="line-160"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>False</span> <span class='hs-comment'>-- PlaceHolderSqlExpr</span>
<a name="line-161"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>id</span> <span class='hs-comment'>-- ParensSqlExpr</span>
<a name="line-162"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>id2</span> <span class='hs-comment'>{- CastSqlExpr -}</span><span class='hs-layout'>)</span> <span class='hs-varid'>expr</span>
<a name="line-163"></a> <span class='hs-comment'>-- Rename projected columns in </span>
<a name="line-164"></a> <span class='hs-comment'>-- a select. Since we did not create another</span>
<a name="line-165"></a> <span class='hs-comment'>-- layer of SELECT, we have to propogate the association list</span>
<a name="line-166"></a> <span class='hs-comment'>-- provided into the current query, or it will not create columns</span>
<a name="line-167"></a> <span class='hs-comment'>-- with the right names. We only go one level - no need to recursively</span>
<a name="line-168"></a> <span class='hs-comment'>-- descend into all queries luckily.</span>
<a name="line-169"></a> <span class='hs-varid'>subst</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Assoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-170"></a> <span class='hs-varid'>subst</span> <span class='hs-varid'>outer</span> <span class='hs-varid'>query</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>attrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cols</span>
<a name="line-171"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>criteria</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>crits</span>
<a name="line-172"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>gru</span>
<a name="line-173"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>orderby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>order</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-174"></a> <span class='hs-comment'>-- map attributes to their aliased columns.</span>
<a name="line-175"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>colToAliases</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>fromList</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>column</span><span class='hs-layout'>,</span> <span class='hs-varid'>alias</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>alias</span><span class='hs-layout'>,</span> <span class='hs-conid'>AttrExpr</span> <span class='hs-varid'>column</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>outer</span><span class='hs-keyglyph'>]</span>
<a name="line-176"></a> <span class='hs-varid'>getAlias</span> <span class='hs-varid'>column</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-conid'>Map</span><span class='hs-varop'>.</span><span class='hs-varid'>lookup</span> <span class='hs-varid'>column</span> <span class='hs-varid'>colToAliases</span> <span class='hs-keyword'>of</span>
<a name="line-177"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>alias</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>alias</span>
<a name="line-178"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>column</span>
<a name="line-179"></a> <span class='hs-varid'>substExpr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldSqlExpr</span> <span class='hs-layout'>(</span><span class='hs-conid'>ColumnSqlExpr</span> <span class='hs-varop'>.</span> <span class='hs-varid'>getAlias</span><span class='hs-layout'>,</span> <span class='hs-conid'>BinSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-conid'>PrefixSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-conid'>PostfixSqlExpr</span>
<a name="line-180"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>FunSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-conid'>AggrFunSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-conid'>ConstSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-conid'>CaseSqlExpr</span>
<a name="line-181"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ListSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-conid'>ExistsSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-conid'>ParamSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-conid'>PlaceHolderSqlExpr</span>
<a name="line-182"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ParensSqlExpr</span><span class='hs-layout'>,</span><span class='hs-conid'>CastSqlExpr</span><span class='hs-layout'>)</span>
<a name="line-183"></a> <span class='hs-varid'>substGroup</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Columns</span> <span class='hs-varid'>cols</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Columns</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>col</span><span class='hs-layout'>,</span> <span class='hs-varid'>expr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>getAlias</span> <span class='hs-varid'>col</span><span class='hs-layout'>,</span> <span class='hs-varid'>expr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>cols</span>
<a name="line-184"></a> <span class='hs-varid'>substGroup</span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>g</span>
<a name="line-185"></a> <span class='hs-comment'>-- replace attributes with alias from outer query </span>
<a name="line-186"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>query</span> <span class='hs-layout'>{</span> <span class='hs-varid'>attrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>currCol</span><span class='hs-layout'>,</span> <span class='hs-varid'>expr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>getAlias</span> <span class='hs-varid'>currCol</span><span class='hs-layout'>,</span> <span class='hs-varid'>expr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>cols</span>
<a name="line-187"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>criteria</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>substExpr</span> <span class='hs-varid'>crits</span>
<a name="line-188"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>substGroup</span> <span class='hs-varid'>gru</span>
<a name="line-189"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>orderby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>expr</span><span class='hs-layout'>,</span> <span class='hs-varid'>ord</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>substExpr</span> <span class='hs-varid'>expr</span><span class='hs-layout'>,</span> <span class='hs-varid'>ord</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>order</span> <span class='hs-layout'>}</span>
<a name="line-190"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>subst</span> <span class='hs-varid'>assoc</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>hasGroupMark</span> <span class='hs-varid'>q</span>
<a name="line-191"></a> <span class='hs-comment'>-- A groupMark indicates the select wants to group</span>
<a name="line-192"></a> <span class='hs-comment'>-- on "all" columns. We replace the mark with the</span>
<a name="line-193"></a> <span class='hs-comment'>-- list of groupable columns. </span>
<a name="line-194"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>q</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupables</span> <span class='hs-layout'>}</span>
<a name="line-195"></a> <span class='hs-comment'>-- Otherwise, we just re-use the query without</span>
<a name="line-196"></a> <span class='hs-comment'>-- changing it (modulo substitutions).</span>
<a name="line-197"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>q</span><span class='hs-layout'>)</span>
<a name="line-198"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>hasAggr</span> <span class='hs-varid'>assoc</span> <span class='hs-varop'>||</span> <span class='hs-varid'>hasGroupMark</span> <span class='hs-varid'>newSelect</span> <span class='hs-keyglyph'>=</span>
<a name="line-199"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>groupByColumns</span> <span class='hs-varid'>assoc</span> <span class='hs-varid'>newSelect</span>
<a name="line-200"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>null</span> <span class='hs-varid'>g</span>
<a name="line-201"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>newSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span> <span class='hs-layout'>}</span>
<a name="line-202"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>newSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Columns</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-203"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newSelect</span>
<a name="line-204"></a> <span class='hs-keyword'>where</span>
<a name="line-205"></a> <span class='hs-varid'>newSelect</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>toSqlSelect</span> <span class='hs-varid'>q</span><span class='hs-layout'>)</span> <span class='hs-layout'>{</span> <span class='hs-varid'>attrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toSqlAssoc</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>assoc</span> <span class='hs-layout'>}</span>
<a name="line-206"></a> <span class='hs-varid'>hasAggr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>null</span> <span class='hs-varop'>.</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>isAggregate</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span><span class='hs-layout'>)</span>
<a name="line-207"></a>
<a name="line-208"></a> <span class='hs-varid'>isAttr</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-conid'>AttrExpr</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-209"></a> <span class='hs-varid'>isAttr</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-210"></a>
<a name="line-211"></a> <span class='hs-varid'>validSelect</span> <span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>attrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-212"></a> <span class='hs-varid'>validSelect</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-213"></a>
<a name="line-214"></a> <span class='hs-varid'>hasGroupMark</span> <span class='hs-layout'>(</span><span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>All</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-215"></a> <span class='hs-varid'>hasGroupMark</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-216"></a>
<a name="line-217"></a> <span class='hs-varid'>groupByColumns</span> <span class='hs-varid'>assoc</span> <span class='hs-varid'>sql</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toSqlAssoc</span> <span class='hs-varid'>gen</span> <span class='hs-layout'>(</span><span class='hs-varid'>groupableProjections</span> <span class='hs-varid'>assoc</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-varid'>groupableOrderCols</span> <span class='hs-varid'>sql</span>
<a name="line-218"></a> <span class='hs-comment'>-- Find projected columns that are not constants or aggregates.</span>
<a name="line-219"></a> <span class='hs-varid'>groupableProjections</span> <span class='hs-varid'>assoc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>isAggregate</span> <span class='hs-varid'>x</span> <span class='hs-varop'>||</span> <span class='hs-varid'>isConstant</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span><span class='hs-layout'>)</span> <span class='hs-varid'>assoc</span>
<a name="line-220"></a> <span class='hs-comment'>-- Get list of order by columns which do not appear in</span>
<a name="line-221"></a> <span class='hs-comment'>-- projected non-aggregate columns already, if any.</span>
<a name="line-222"></a> <span class='hs-varid'>groupableOrderCols</span> <span class='hs-varid'>sql</span> <span class='hs-keyglyph'>=</span>
<a name="line-223"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>eligible</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-224"></a> <span class='hs-layout'>(</span><span class='hs-conid'>ColumnSqlExpr</span> <span class='hs-varid'>attr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span>
<a name="line-225"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>False</span><span class='hs-layout'>)</span>
<a name="line-226"></a> <span class='hs-keyword'>in</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>e</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>ColumnSqlExpr</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>eligible</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>$</span> <span class='hs-varid'>orderby</span> <span class='hs-varid'>sql</span><span class='hs-keyglyph'>]</span>
<a name="line-227"></a>
<a name="line-228"></a>
<a name="line-229"></a><a name="defaultSqlGroup"></a><span class='hs-comment'>-- | Ensures the groupby value on the SqlSelect either preserves existing </span>
<a name="line-230"></a><span class='hs-comment'>-- grouping or that it will group on all columns (i.e, Mark == All).</span>
<a name="line-231"></a><span class='hs-definition'>defaultSqlGroup</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Assoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-232"></a><span class='hs-definition'>defaultSqlGroup</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>q</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>q</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>All</span> <span class='hs-layout'>}</span>
<a name="line-233"></a><span class='hs-definition'>defaultSqlGroup</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>q</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>q</span>
<a name="line-234"></a>
<a name="line-235"></a><a name="defaultSqlRestrict"></a><span class='hs-definition'>defaultSqlRestrict</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PrimExpr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-236"></a><span class='hs-definition'>defaultSqlRestrict</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>expr</span> <span class='hs-varid'>q</span>
<a name="line-237"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sql</span> <span class='hs-layout'>{</span> <span class='hs-varid'>criteria</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>expr</span> <span class='hs-conop'>:</span> <span class='hs-varid'>criteria</span> <span class='hs-varid'>sql</span> <span class='hs-layout'>}</span>
<a name="line-238"></a> <span class='hs-keyword'>where</span>
<a name="line-239"></a> <span class='hs-varid'>sql</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toSqlSelect</span> <span class='hs-varid'>q</span>
<a name="line-240"></a>
<a name="line-241"></a><a name="defaultSqlBinary"></a><span class='hs-definition'>defaultSqlBinary</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>RelOp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-242"></a><span class='hs-definition'>defaultSqlBinary</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>Times</span> <span class='hs-varid'>q1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varid'>q2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-243"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-layout'>(</span><span class='hs-varid'>attrs</span> <span class='hs-varid'>q1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>addTable</span> <span class='hs-varid'>q1</span> <span class='hs-varid'>q2</span>
<a name="line-244"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-layout'>(</span><span class='hs-varid'>attrs</span> <span class='hs-varid'>q2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>addTable</span> <span class='hs-varid'>q2</span> <span class='hs-varid'>q1</span>
<a name="line-245"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span><span class='hs-varid'>q1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span><span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span><span class='hs-varid'>q2</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>}</span>
<a name="line-246"></a> <span class='hs-keyword'>where</span>
<a name="line-247"></a> <span class='hs-varid'>addTable</span> <span class='hs-varid'>sql</span> <span class='hs-varid'>q</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sql</span><span class='hs-layout'>{</span> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tables</span> <span class='hs-varid'>sql</span> <span class='hs-varop'>++</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span><span class='hs-varid'>q</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>}</span>
<a name="line-248"></a><span class='hs-definition'>defaultSqlBinary</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>Times</span> <span class='hs-varid'>q1</span> <span class='hs-varid'>q2</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span> <span class='hs-varid'>q1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span> <span class='hs-varid'>q2</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>}</span>
<a name="line-249"></a><span class='hs-definition'>defaultSqlBinary</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>op</span> <span class='hs-varid'>q1</span> <span class='hs-varid'>q2</span>
<a name="line-250"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlBin</span> <span class='hs-layout'>(</span><span class='hs-varid'>toSqlOp</span> <span class='hs-varid'>op</span><span class='hs-layout'>)</span> <span class='hs-varid'>q1</span> <span class='hs-varid'>q2</span>
<a name="line-251"></a>
<a name="line-252"></a><a name="defaultSqlSpecial"></a><span class='hs-definition'>defaultSqlSpecial</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SpecialOp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-253"></a><span class='hs-definition'>defaultSqlSpecial</span> <span class='hs-varid'>gen</span> <span class='hs-layout'>(</span><span class='hs-conid'>Order</span> <span class='hs-varid'>o</span><span class='hs-layout'>)</span> <span class='hs-varid'>q</span>
<a name="line-254"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sql</span> <span class='hs-layout'>{</span> <span class='hs-varid'>orderby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newOrder</span> <span class='hs-varop'>++</span> <span class='hs-varid'>oldOrder</span> <span class='hs-layout'>}</span>
<a name="line-255"></a> <span class='hs-keyword'>where</span>
<a name="line-256"></a> <span class='hs-varid'>sql</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toSqlSelect</span> <span class='hs-varid'>q</span>
<a name="line-257"></a> <span class='hs-varid'>newOrder</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>toSqlOrder</span> <span class='hs-varid'>gen</span><span class='hs-layout'>)</span> <span class='hs-varid'>o</span>
<a name="line-258"></a>
<a name="line-259"></a> <span class='hs-comment'>-- FIXME: what if they conflict?</span>
<a name="line-260"></a> <span class='hs-comment'>-- The old version tried to fix that, but that</span>
<a name="line-261"></a> <span class='hs-comment'>-- would only work partly</span>
<a name="line-262"></a> <span class='hs-varid'>oldOrder</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>orderby</span> <span class='hs-varid'>sql</span>
<a name="line-263"></a><span class='hs-definition'>defaultSqlSpecial</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Top</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varid'>q</span>
<a name="line-264"></a> <span class='hs-comment'>-- FIXME: works for a few databases</span>
<a name="line-265"></a> <span class='hs-comment'>-- maybe we should use ROW_NUMBER() here</span>
<a name="line-266"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sql</span> <span class='hs-layout'>{</span> <span class='hs-varid'>extra</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-str'>"LIMIT "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>extra</span> <span class='hs-varid'>sql</span> <span class='hs-layout'>}</span>
<a name="line-267"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>sql</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toSqlSelect</span> <span class='hs-varid'>q</span>
<a name="line-268"></a>
<a name="line-269"></a>
<a name="line-270"></a><a name="toSqlOrder"></a><span class='hs-definition'>toSqlOrder</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>OrderExpr</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>SqlExpr</span><span class='hs-layout'>,</span><span class='hs-conid'>SqlOrder</span><span class='hs-layout'>)</span>
<a name="line-271"></a><span class='hs-definition'>toSqlOrder</span> <span class='hs-varid'>gen</span> <span class='hs-layout'>(</span><span class='hs-conid'>OrderExpr</span> <span class='hs-varid'>o</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>e</span><span class='hs-layout'>,</span> <span class='hs-varid'>o'</span><span class='hs-layout'>)</span>
<a name="line-272"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>o'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>o</span> <span class='hs-keyword'>of</span>
<a name="line-273"></a> <span class='hs-conid'>OpAsc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlAsc</span>
<a name="line-274"></a> <span class='hs-conid'>OpDesc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlDesc</span>
<a name="line-275"></a>
<a name="line-276"></a><a name="toSqlSelect"></a><span class='hs-comment'>-- | Make sure our SqlSelect statement is really a SqlSelect and not</span>
<a name="line-277"></a><span class='hs-comment'>-- another constructor.</span>
<a name="line-278"></a><span class='hs-definition'>toSqlSelect</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-279"></a><span class='hs-definition'>toSqlSelect</span> <span class='hs-varid'>sql</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>sql</span> <span class='hs-keyword'>of</span>
<a name="line-280"></a> <span class='hs-conid'>SqlEmpty</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>newSelect</span>
<a name="line-281"></a> <span class='hs-conid'>SqlTable</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>newSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span><span class='hs-varid'>sql</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>}</span>
<a name="line-282"></a> <span class='hs-comment'>-- Below we make sure to bring groupby marks that have not </span>
<a name="line-283"></a> <span class='hs-comment'>-- been processed up the tree. The mark moves up the tree</span>
<a name="line-284"></a> <span class='hs-comment'>-- for efficiency. A "Columns" mark does not move -- it indicates</span>
<a name="line-285"></a> <span class='hs-comment'>-- a select that will use a group by. An All mark does move, as it</span>
<a name="line-286"></a> <span class='hs-comment'>-- needs to find its containing projection. Marks that move are</span>
<a name="line-287"></a> <span class='hs-comment'>-- replaced by Nothing.</span>
<a name="line-288"></a> <span class='hs-conid'>SqlBin</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span>
<a name="line-289"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>prevGroup</span><span class='hs-layout'>,</span> <span class='hs-varid'>newSql</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>findGroup</span> <span class='hs-varid'>sql</span>
<a name="line-290"></a> <span class='hs-varid'>findGroup</span> <span class='hs-layout'>(</span><span class='hs-conid'>SqlBin</span> <span class='hs-varid'>op</span> <span class='hs-varid'>q1</span> <span class='hs-varid'>q2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-291"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>g1</span><span class='hs-layout'>,</span> <span class='hs-varid'>q1'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>findGroup</span> <span class='hs-varid'>q1</span>
<a name="line-292"></a> <span class='hs-layout'>(</span><span class='hs-varid'>g2</span><span class='hs-layout'>,</span> <span class='hs-varid'>q2'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>findGroup</span> <span class='hs-varid'>q2</span>
<a name="line-293"></a> <span class='hs-keyword'>in</span> <span class='hs-layout'>(</span><span class='hs-varid'>g1</span> <span class='hs-varop'>`or`</span> <span class='hs-varid'>g2</span><span class='hs-layout'>,</span> <span class='hs-conid'>SqlBin</span> <span class='hs-varid'>op</span> <span class='hs-varid'>q1'</span> <span class='hs-varid'>q2'</span><span class='hs-layout'>)</span>
<a name="line-294"></a> <span class='hs-varid'>findGroup</span> <span class='hs-varid'>q</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Columns</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-varid'>q</span><span class='hs-layout'>)</span>
<a name="line-295"></a> <span class='hs-varid'>findGroup</span> <span class='hs-varid'>q</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>All</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-conid'>All</span><span class='hs-layout'>,</span> <span class='hs-varid'>q</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-296"></a> <span class='hs-varid'>findGroup</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-297"></a> <span class='hs-varid'>or</span> <span class='hs-varid'>l</span> <span class='hs-varid'>r</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>r</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>l</span>
<a name="line-298"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>newSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span> <span class='hs-varid'>newSql</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-299"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prevGroup</span> <span class='hs-layout'>}</span>
<a name="line-300"></a> <span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>attrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>sql</span>
<a name="line-301"></a> <span class='hs-comment'>-- Here we have a mark that should not move. </span>
<a name="line-302"></a> <span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>Columns</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span>
<a name="line-303"></a> <span class='hs-varid'>newSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span> <span class='hs-varid'>sql</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>}</span>
<a name="line-304"></a> <span class='hs-comment'>-- Any mark here should be moved. Notice we set the</span>
<a name="line-305"></a> <span class='hs-comment'>-- previous mark with Nothing (though it may already be</span>
<a name="line-306"></a> <span class='hs-comment'>-- Nothing).</span>
<a name="line-307"></a> <span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>group</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>-></span>
<a name="line-308"></a> <span class='hs-varid'>newSelect</span> <span class='hs-layout'>{</span> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-str'>""</span><span class='hs-layout'>,</span> <span class='hs-varid'>sql</span> <span class='hs-layout'>{</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-309"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>group</span> <span class='hs-layout'>}</span>
<a name="line-310"></a>
<a name="line-311"></a>
<a name="line-312"></a><a name="toSqlAssoc"></a><span class='hs-definition'>toSqlAssoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Assoc</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlColumn</span><span class='hs-layout'>,</span><span class='hs-conid'>SqlExpr</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-313"></a><span class='hs-definition'>toSqlAssoc</span> <span class='hs-varid'>gen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>attr</span><span class='hs-layout'>,</span><span class='hs-varid'>expr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>attr</span><span class='hs-layout'>,</span> <span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>expr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-314"></a>
<a name="line-315"></a><a name="toSqlOp"></a><span class='hs-definition'>toSqlOp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>RelOp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-316"></a><span class='hs-definition'>toSqlOp</span> <span class='hs-conid'>Union</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"UNION"</span>
<a name="line-317"></a><span class='hs-definition'>toSqlOp</span> <span class='hs-conid'>Intersect</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"INTERSECT"</span>
<a name="line-318"></a><span class='hs-definition'>toSqlOp</span> <span class='hs-conid'>Divide</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"DIVIDE"</span>
<a name="line-319"></a><span class='hs-definition'>toSqlOp</span> <span class='hs-conid'>Difference</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"EXCEPT"</span>
<a name="line-320"></a>
<a name="line-321"></a>
<a name="line-322"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-323"></a><span class='hs-comment'>-- * UPDATE</span>
<a name="line-324"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-325"></a>
<a name="line-326"></a><a name="defaultSqlUpdate"></a><span class='hs-comment'>-- | Creates a 'SqlUpdate'. Corresponds to the SQL statement</span>
<a name="line-327"></a><span class='hs-comment'>-- UPDATE which updates data in a table.</span>
<a name="line-328"></a><span class='hs-definition'>defaultSqlUpdate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-329"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TableName</span> <span class='hs-comment'>-- ^ Name of the table to update.</span>
<a name="line-330"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PrimExpr</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Conditions which must all be true for a row</span>
<a name="line-331"></a> <span class='hs-comment'>-- to be updated.</span>
<a name="line-332"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Assoc</span> <span class='hs-comment'>-- ^ Update the data with this.</span>
<a name="line-333"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlUpdate</span>
<a name="line-334"></a><span class='hs-definition'>defaultSqlUpdate</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>name</span> <span class='hs-varid'>criteria</span> <span class='hs-varid'>assigns</span>
<a name="line-335"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlUpdate</span> <span class='hs-varid'>name</span> <span class='hs-layout'>(</span><span class='hs-varid'>toSqlAssoc</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>assigns</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span><span class='hs-layout'>)</span> <span class='hs-varid'>criteria</span><span class='hs-layout'>)</span>
<a name="line-336"></a>
<a name="line-337"></a>
<a name="line-338"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-339"></a><span class='hs-comment'>-- * INSERT</span>
<a name="line-340"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-341"></a>
<a name="line-342"></a><a name="defaultSqlInsert"></a><span class='hs-comment'>-- | Creates a 'SqlInsert'. </span>
<a name="line-343"></a><span class='hs-definition'>defaultSqlInsert</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-344"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TableName</span> <span class='hs-comment'>-- ^ Name of the table</span>
<a name="line-345"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Assoc</span> <span class='hs-comment'>-- ^ What to insert.</span>
<a name="line-346"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlInsert</span>
<a name="line-347"></a><span class='hs-definition'>defaultSqlInsert</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>table</span> <span class='hs-varid'>assoc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlInsert</span> <span class='hs-varid'>table</span> <span class='hs-varid'>cs</span> <span class='hs-varid'>es</span>
<a name="line-348"></a> <span class='hs-keyword'>where</span> <span class='hs-layout'>(</span><span class='hs-varid'>cs</span><span class='hs-layout'>,</span><span class='hs-varid'>es</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unzip</span> <span class='hs-layout'>(</span><span class='hs-varid'>toSqlAssoc</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>assoc</span><span class='hs-layout'>)</span>
<a name="line-349"></a>
<a name="line-350"></a><a name="defaultSqlInsertQuery"></a><span class='hs-comment'>-- | Creates a 'SqlInsert'. Corresponds to the SQL statement</span>
<a name="line-351"></a><span class='hs-comment'>-- INSERT INTO which is used to insert new rows in a table.</span>
<a name="line-352"></a><span class='hs-definition'>defaultSqlInsertQuery</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-353"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TableName</span> <span class='hs-comment'>-- ^ Name of the table</span>
<a name="line-354"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PrimQuery</span> <span class='hs-comment'>-- ^ What to insert</span>
<a name="line-355"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlInsert</span>
<a name="line-356"></a><span class='hs-definition'>defaultSqlInsertQuery</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>table</span> <span class='hs-varid'>q</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlInsertQuery</span> <span class='hs-varid'>table</span> <span class='hs-varid'>cs</span> <span class='hs-varid'>sql</span>
<a name="line-357"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>attributes</span> <span class='hs-varid'>q</span>
<a name="line-358"></a> <span class='hs-varid'>sql</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sqlQuery</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>q</span>
<a name="line-359"></a>
<a name="line-360"></a>
<a name="line-361"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-362"></a><span class='hs-comment'>-- * DELETE</span>
<a name="line-363"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-364"></a>
<a name="line-365"></a><a name="defaultSqlDelete"></a><span class='hs-comment'>-- | Creates a 'SqlDelete'. Corresponds to the SQL statement</span>
<a name="line-366"></a><span class='hs-comment'>-- DELETE which deletes rows in a table.</span>
<a name="line-367"></a><span class='hs-definition'>defaultSqlDelete</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-368"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TableName</span> <span class='hs-comment'>-- ^ Name of the table</span>
<a name="line-369"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PrimExpr</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Criteria which must all be true for a row</span>
<a name="line-370"></a> <span class='hs-comment'>-- to be deleted.</span>
<a name="line-371"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlDelete</span>
<a name="line-372"></a><span class='hs-definition'>defaultSqlDelete</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>name</span> <span class='hs-varid'>criteria</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlDelete</span> <span class='hs-varid'>name</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span><span class='hs-layout'>)</span> <span class='hs-varid'>criteria</span><span class='hs-layout'>)</span>
<a name="line-373"></a>
<a name="line-374"></a>
<a name="line-375"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-376"></a><span class='hs-comment'>-- * CREATE</span>
<a name="line-377"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-378"></a>
<a name="line-379"></a><a name="defaultSqlCreateDB"></a><span class='hs-comment'>-- | Use this to create a 'SqlCreate' data type corresponding to </span>
<a name="line-380"></a><span class='hs-comment'>-- the SQL statement CREATE DATABASE which creates a new database.</span>
<a name="line-381"></a><span class='hs-definition'>defaultSqlCreateDB</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-382"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ name of the database.</span>
<a name="line-383"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlCreate</span>
<a name="line-384"></a><span class='hs-definition'>defaultSqlCreateDB</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlCreateDB</span> <span class='hs-varid'>name</span>
<a name="line-385"></a>
<a name="line-386"></a><a name="defaultSqlCreateTable"></a><span class='hs-comment'>-- | Use this to create a 'SqlCreate' data type corresponding to </span>
<a name="line-387"></a><span class='hs-comment'>-- the SQL statement CREATE which creates a new table.</span>
<a name="line-388"></a><span class='hs-definition'>defaultSqlCreateTable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span>
<a name="line-389"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TableName</span> <span class='hs-comment'>-- ^ name of the table to be created.</span>
<a name="line-390"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Attribute</span><span class='hs-layout'>,</span><span class='hs-conid'>FieldDesc</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Column descriptions</span>
<a name="line-391"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlCreate</span>
<a name="line-392"></a><span class='hs-definition'>defaultSqlCreateTable</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>name</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span>
<a name="line-393"></a> <span class='hs-conid'>SqlCreateTable</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>cname</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlType</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span><span class='hs-varid'>nullable</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-394"></a> <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>cname</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-layout'>,</span><span class='hs-varid'>nullable</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>xs</span><span class='hs-keyglyph'>]</span>
<a name="line-395"></a>
<a name="line-396"></a>
<a name="line-397"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-398"></a><span class='hs-comment'>-- * DROP</span>
<a name="line-399"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-400"></a>
<a name="line-401"></a><a name="defaultSqlDropDB"></a><span class='hs-comment'>-- | Creates a 'SqlDrop' that delete the database with the </span>
<a name="line-402"></a><span class='hs-comment'>-- name given as the first argument.</span>
<a name="line-403"></a><span class='hs-definition'>defaultSqlDropDB</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlDrop</span>
<a name="line-404"></a><span class='hs-definition'>defaultSqlDropDB</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlDropDB</span> <span class='hs-varid'>name</span>
<a name="line-405"></a>
<a name="line-406"></a><a name="defaultSqlDropTable"></a><span class='hs-comment'>-- | Creates a 'SqlDrop' that delete the database named</span>
<a name="line-407"></a><span class='hs-comment'>-- in the first argument.</span>
<a name="line-408"></a><span class='hs-definition'>defaultSqlDropTable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TableName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlDrop</span>
<a name="line-409"></a><span class='hs-definition'>defaultSqlDropTable</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlDropTable</span> <span class='hs-varid'>name</span>
<a name="line-410"></a>
<a name="line-411"></a>
<a name="line-412"></a><span class='hs-comment'>-- * Expressions</span>
<a name="line-413"></a>
<a name="line-414"></a><a name="defaultSqlExpr"></a><span class='hs-definition'>defaultSqlExpr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PrimExpr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlExpr</span>
<a name="line-415"></a><span class='hs-definition'>defaultSqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span>
<a name="line-416"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>e</span> <span class='hs-keyword'>of</span>
<a name="line-417"></a> <span class='hs-conid'>AttrExpr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ColumnSqlExpr</span> <span class='hs-varid'>a</span>
<a name="line-418"></a> <span class='hs-conid'>BinExpr</span> <span class='hs-varid'>op</span> <span class='hs-varid'>e1</span> <span class='hs-varid'>e2</span> <span class='hs-keyglyph'>-></span>
<a name="line-419"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>leftE</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>e1</span>
<a name="line-420"></a> <span class='hs-varid'>rightE</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>e2</span>
<a name="line-421"></a> <span class='hs-varid'>paren</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ParensSqlExpr</span>
<a name="line-422"></a> <span class='hs-layout'>(</span><span class='hs-varid'>expL</span><span class='hs-layout'>,</span> <span class='hs-varid'>expR</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>op</span><span class='hs-layout'>,</span> <span class='hs-varid'>e1</span><span class='hs-layout'>,</span> <span class='hs-varid'>e2</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-423"></a> <span class='hs-layout'>(</span><span class='hs-conid'>OpAnd</span><span class='hs-layout'>,</span> <span class='hs-varid'>e1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BinExpr</span> <span class='hs-conid'>OpOr</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>e2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BinExpr</span> <span class='hs-conid'>OpOr</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-424"></a> <span class='hs-layout'>(</span><span class='hs-varid'>paren</span> <span class='hs-varid'>leftE</span><span class='hs-layout'>,</span> <span class='hs-varid'>paren</span> <span class='hs-varid'>rightE</span><span class='hs-layout'>)</span>
<a name="line-425"></a> <span class='hs-layout'>(</span><span class='hs-conid'>OpOr</span><span class='hs-layout'>,</span> <span class='hs-varid'>e1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BinExpr</span> <span class='hs-conid'>OpAnd</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>e2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BinExpr</span> <span class='hs-conid'>OpAnd</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-426"></a> <span class='hs-layout'>(</span><span class='hs-varid'>paren</span> <span class='hs-varid'>leftE</span><span class='hs-layout'>,</span> <span class='hs-varid'>paren</span> <span class='hs-varid'>rightE</span><span class='hs-layout'>)</span>
<a name="line-427"></a> <span class='hs-layout'>(</span><span class='hs-conid'>OpAnd</span><span class='hs-layout'>,</span> <span class='hs-varid'>e1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BinExpr</span> <span class='hs-conid'>OpOr</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>e2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-428"></a> <span class='hs-layout'>(</span><span class='hs-varid'>paren</span> <span class='hs-varid'>leftE</span><span class='hs-layout'>,</span> <span class='hs-varid'>rightE</span><span class='hs-layout'>)</span>
<a name="line-429"></a> <span class='hs-layout'>(</span><span class='hs-conid'>OpAnd</span><span class='hs-layout'>,</span> <span class='hs-varid'>e1</span><span class='hs-layout'>,</span> <span class='hs-varid'>e2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BinExpr</span> <span class='hs-conid'>OpOr</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-430"></a> <span class='hs-layout'>(</span><span class='hs-varid'>leftE</span><span class='hs-layout'>,</span> <span class='hs-varid'>paren</span> <span class='hs-varid'>rightE</span><span class='hs-layout'>)</span>
<a name="line-431"></a> <span class='hs-layout'>(</span><span class='hs-conid'>OpOr</span><span class='hs-layout'>,</span> <span class='hs-varid'>e1</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BinExpr</span> <span class='hs-conid'>OpAnd</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>e2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-432"></a> <span class='hs-layout'>(</span><span class='hs-varid'>paren</span> <span class='hs-varid'>leftE</span><span class='hs-layout'>,</span> <span class='hs-varid'>rightE</span><span class='hs-layout'>)</span>
<a name="line-433"></a> <span class='hs-layout'>(</span><span class='hs-conid'>OpOr</span><span class='hs-layout'>,</span> <span class='hs-varid'>e1</span><span class='hs-layout'>,</span> <span class='hs-varid'>e2</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>BinExpr</span> <span class='hs-conid'>OpAnd</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-434"></a> <span class='hs-layout'>(</span><span class='hs-varid'>leftE</span><span class='hs-layout'>,</span> <span class='hs-varid'>paren</span> <span class='hs-varid'>rightE</span><span class='hs-layout'>)</span>
<a name="line-435"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>leftE</span><span class='hs-layout'>,</span> <span class='hs-varid'>rightE</span><span class='hs-layout'>)</span>
<a name="line-436"></a> <span class='hs-keyword'>in</span> <span class='hs-conid'>BinSqlExpr</span> <span class='hs-layout'>(</span><span class='hs-varid'>showBinOp</span> <span class='hs-varid'>op</span><span class='hs-layout'>)</span> <span class='hs-varid'>expL</span> <span class='hs-varid'>expR</span>
<a name="line-437"></a> <span class='hs-conid'>UnExpr</span> <span class='hs-varid'>op</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>op'</span><span class='hs-layout'>,</span><span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sqlUnOp</span> <span class='hs-varid'>op</span>
<a name="line-438"></a> <span class='hs-varid'>e'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>e</span>
<a name="line-439"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>t</span> <span class='hs-keyword'>of</span>
<a name="line-440"></a> <span class='hs-conid'>UnOpFun</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FunSqlExpr</span> <span class='hs-varid'>op'</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>e'</span><span class='hs-keyglyph'>]</span>
<a name="line-441"></a> <span class='hs-conid'>UnOpPrefix</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PrefixSqlExpr</span> <span class='hs-varid'>op'</span> <span class='hs-varid'>e'</span>
<a name="line-442"></a> <span class='hs-conid'>UnOpPostfix</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PostfixSqlExpr</span> <span class='hs-varid'>op'</span> <span class='hs-varid'>e'</span>
<a name="line-443"></a> <span class='hs-conid'>AggrExpr</span> <span class='hs-varid'>op</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-varid'>op'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showAggrOp</span> <span class='hs-varid'>op</span>
<a name="line-444"></a> <span class='hs-varid'>e'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>e</span>
<a name="line-445"></a> <span class='hs-keyword'>in</span> <span class='hs-conid'>AggrFunSqlExpr</span> <span class='hs-varid'>op'</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>e'</span><span class='hs-keyglyph'>]</span>
<a name="line-446"></a> <span class='hs-conid'>ConstExpr</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ConstSqlExpr</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlLiteral</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span>
<a name="line-447"></a> <span class='hs-conid'>CaseExpr</span> <span class='hs-varid'>cs</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>let</span> <span class='hs-varid'>cs'</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>cs</span><span class='hs-keyglyph'>]</span>
<a name="line-448"></a> <span class='hs-varid'>e'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>e</span>
<a name="line-449"></a> <span class='hs-keyword'>in</span> <span class='hs-conid'>CaseSqlExpr</span> <span class='hs-varid'>cs'</span> <span class='hs-varid'>e'</span>
<a name="line-450"></a> <span class='hs-conid'>ListExpr</span> <span class='hs-varid'>es</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ListSqlExpr</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span><span class='hs-layout'>)</span> <span class='hs-varid'>es</span><span class='hs-layout'>)</span>
<a name="line-451"></a> <span class='hs-conid'>ParamExpr</span> <span class='hs-varid'>n</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ParamSqlExpr</span> <span class='hs-varid'>n</span> <span class='hs-conid'>PlaceHolderSqlExpr</span>
<a name="line-452"></a> <span class='hs-conid'>FunExpr</span> <span class='hs-varid'>n</span> <span class='hs-varid'>exprs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FunSqlExpr</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span><span class='hs-layout'>)</span> <span class='hs-varid'>exprs</span><span class='hs-layout'>)</span>
<a name="line-453"></a> <span class='hs-conid'>CastExpr</span> <span class='hs-varid'>typ</span> <span class='hs-varid'>e1</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CastSqlExpr</span> <span class='hs-varid'>typ</span> <span class='hs-layout'>(</span><span class='hs-varid'>sqlExpr</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>e1</span><span class='hs-layout'>)</span>
<a name="line-454"></a>
<a name="line-455"></a><a name="showBinOp"></a><span class='hs-definition'>showBinOp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>BinOp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-456"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpEq</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"="</span>
<a name="line-457"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpLt</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"<"</span>
<a name="line-458"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpLtEq</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"<="</span>
<a name="line-459"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpGt</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>">"</span>
<a name="line-460"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpGtEq</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>">="</span>
<a name="line-461"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpNotEq</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"<>"</span>
<a name="line-462"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpAnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"AND"</span>
<a name="line-463"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpOr</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"OR"</span>
<a name="line-464"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpLike</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"LIKE"</span>
<a name="line-465"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpIn</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"IN"</span>
<a name="line-466"></a><span class='hs-definition'>showBinOp</span> <span class='hs-layout'>(</span><span class='hs-conid'>OpOther</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-467"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpCat</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"+"</span>
<a name="line-468"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpPlus</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"+"</span>
<a name="line-469"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpMinus</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"-"</span>
<a name="line-470"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpMul</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"*"</span>
<a name="line-471"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpDiv</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"/"</span>
<a name="line-472"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpMod</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"MOD"</span>
<a name="line-473"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpBitNot</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"~"</span>
<a name="line-474"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpBitAnd</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"&"</span>
<a name="line-475"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpBitOr</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"|"</span>
<a name="line-476"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpBitXor</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"^"</span>
<a name="line-477"></a><span class='hs-definition'>showBinOp</span> <span class='hs-conid'>OpAsg</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"="</span>
<a name="line-478"></a>
<a name="line-479"></a>
<a name="line-480"></a><a name="UnOpType"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>UnOpType</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>UnOpFun</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>UnOpPrefix</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>UnOpPostfix</span>
<a name="line-481"></a>
<a name="line-482"></a><a name="sqlUnOp"></a><span class='hs-definition'>sqlUnOp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>UnOp</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>UnOpType</span><span class='hs-layout'>)</span>
<a name="line-483"></a><span class='hs-definition'>sqlUnOp</span> <span class='hs-conid'>OpNot</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-str'>"NOT"</span><span class='hs-layout'>,</span> <span class='hs-conid'>UnOpPrefix</span><span class='hs-layout'>)</span>
<a name="line-484"></a><span class='hs-definition'>sqlUnOp</span> <span class='hs-conid'>OpIsNull</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-str'>"IS NULL"</span><span class='hs-layout'>,</span> <span class='hs-conid'>UnOpPostfix</span><span class='hs-layout'>)</span>
<a name="line-485"></a><span class='hs-definition'>sqlUnOp</span> <span class='hs-conid'>OpIsNotNull</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-str'>"IS NOT NULL"</span><span class='hs-layout'>,</span> <span class='hs-conid'>UnOpPostfix</span><span class='hs-layout'>)</span>
<a name="line-486"></a><span class='hs-definition'>sqlUnOp</span> <span class='hs-conid'>OpLength</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-str'>"LENGTH"</span><span class='hs-layout'>,</span> <span class='hs-conid'>UnOpFun</span><span class='hs-layout'>)</span>
<a name="line-487"></a><span class='hs-definition'>sqlUnOp</span> <span class='hs-layout'>(</span><span class='hs-conid'>UnOpOther</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-conid'>UnOpFun</span><span class='hs-layout'>)</span>
<a name="line-488"></a>
<a name="line-489"></a>
<a name="line-490"></a><a name="showAggrOp"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AggrOp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-491"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrCount</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"COUNT"</span>
<a name="line-492"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrSum</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"SUM"</span>
<a name="line-493"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrAvg</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"AVG"</span>
<a name="line-494"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrMin</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"MIN"</span>
<a name="line-495"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrMax</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"MAX"</span>
<a name="line-496"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrStdDev</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"StdDev"</span>
<a name="line-497"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrStdDevP</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"StdDevP"</span>
<a name="line-498"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrVar</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"Var"</span>
<a name="line-499"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-conid'>AggrVarP</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"VarP"</span>
<a name="line-500"></a><span class='hs-definition'>showAggrOp</span> <span class='hs-layout'>(</span><span class='hs-conid'>AggrOther</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-501"></a>
<a name="line-502"></a>
<a name="line-503"></a><a name="defaultSqlLiteral"></a><span class='hs-definition'>defaultSqlLiteral</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Literal</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-504"></a><span class='hs-definition'>defaultSqlLiteral</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span>
<a name="line-505"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>l</span> <span class='hs-keyword'>of</span>
<a name="line-506"></a> <span class='hs-conid'>NullLit</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"NULL"</span>
<a name="line-507"></a> <span class='hs-conid'>DefaultLit</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"DEFAULT"</span>
<a name="line-508"></a> <span class='hs-conid'>BoolLit</span> <span class='hs-conid'>True</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"TRUE"</span>
<a name="line-509"></a> <span class='hs-conid'>BoolLit</span> <span class='hs-conid'>False</span> <span class='hs-keyglyph'>-></span> <span class='hs-str'>"FALSE"</span>
<a name="line-510"></a> <span class='hs-conid'>StringLit</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>quote</span> <span class='hs-varid'>s</span>
<a name="line-511"></a> <span class='hs-conid'>IntegerLit</span> <span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>show</span> <span class='hs-varid'>i</span>
<a name="line-512"></a> <span class='hs-conid'>DoubleLit</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>show</span> <span class='hs-varid'>d</span>
<a name="line-513"></a> <span class='hs-conid'>DateLit</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>quote</span> <span class='hs-layout'>(</span><span class='hs-varid'>formatCalendarTime</span> <span class='hs-varid'>defaultTimeLocale</span> <span class='hs-varid'>fmt</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-514"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>fmt</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>iso8601DateFormat</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-str'>"%H:%M:%S"</span><span class='hs-layout'>)</span>
<a name="line-515"></a> <span class='hs-conid'>OtherLit</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>l</span>
<a name="line-516"></a>
<a name="line-517"></a>
<a name="line-518"></a><a name="defaultSqlQuote"></a><span class='hs-definition'>defaultSqlQuote</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlGenerator</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-519"></a><span class='hs-definition'>defaultSqlQuote</span> <span class='hs-varid'>gen</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>quote</span> <span class='hs-varid'>s</span>
<a name="line-520"></a>
<a name="line-521"></a><a name="quote"></a><span class='hs-comment'>-- | Quote a string and escape characters that need escaping</span>
<a name="line-522"></a><span class='hs-comment'>-- FIXME: this is backend dependent</span>
<a name="line-523"></a><span class='hs-definition'>quote</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-524"></a><span class='hs-definition'>quote</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"'"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>escape</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-str'>"'"</span>
<a name="line-525"></a>
<a name="line-526"></a><a name="escape"></a><span class='hs-comment'>-- | Escape characters that need escaping</span>
<a name="line-527"></a><span class='hs-definition'>escape</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-528"></a><span class='hs-definition'>escape</span> <span class='hs-chr'>'\NUL'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\0"</span>
<a name="line-529"></a><span class='hs-definition'>escape</span> <span class='hs-chr'>'\''</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"''"</span>
<a name="line-530"></a><span class='hs-definition'>escape</span> <span class='hs-chr'>'"'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\\""</span>
<a name="line-531"></a><span class='hs-definition'>escape</span> <span class='hs-chr'>'\b'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\b"</span>
<a name="line-532"></a><span class='hs-definition'>escape</span> <span class='hs-chr'>'\n'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\n"</span>
<a name="line-533"></a><span class='hs-definition'>escape</span> <span class='hs-chr'>'\r'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\r"</span>
<a name="line-534"></a><span class='hs-definition'>escape</span> <span class='hs-chr'>'\t'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\t"</span>
<a name="line-535"></a><span class='hs-definition'>escape</span> <span class='hs-chr'>'\\'</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\\\\"</span>
<a name="line-536"></a><span class='hs-definition'>escape</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-537"></a>
</pre></body>
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