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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 : SQL</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'>-- A data type for SQL.</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-layout'>(</span>
<a name="line-16"></a> <span class='hs-conid'>SqlTable</span><span class='hs-layout'>,</span>
<a name="line-17"></a> <span class='hs-conid'>SqlColumn</span><span class='hs-layout'>,</span>
<a name="line-18"></a> <span class='hs-conid'>SqlName</span><span class='hs-layout'>,</span>
<a name="line-19"></a> <span class='hs-conid'>SqlOrder</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-20"></a> <span class='hs-conid'>SqlType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-21"></a>
<a name="line-22"></a> <span class='hs-conid'>SqlSelect</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-conid'>SqlUpdate</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-conid'>SqlDelete</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-conid'>SqlInsert</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-26"></a> <span class='hs-conid'>SqlCreate</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-conid'>SqlDrop</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-28"></a>
<a name="line-29"></a> <span class='hs-conid'>SqlExpr</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-conid'>Mark</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-31"></a>
<a name="line-32"></a> <span class='hs-varid'>newSelect</span><span class='hs-layout'>,</span> <span class='hs-varid'>foldSqlExpr</span><span class='hs-layout'>,</span> <span class='hs-varid'>foldSqlSelect</span>
<a name="line-33"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-34"></a>
<a name="line-35"></a>
<a name="line-36"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-37"></a><span class='hs-comment'>-- * SQL data type</span>
<a name="line-38"></a><span class='hs-comment'>-----------------------------------------------------------</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="SqlTable"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>SqlTable</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-41"></a>
<a name="line-42"></a><a name="SqlColumn"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>SqlColumn</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="SqlName"></a><span class='hs-comment'>-- | A valid SQL name for a parameter.</span>
<a name="line-45"></a><a name="SqlName"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>SqlName</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-46"></a>
<a name="line-47"></a><a name="SqlOrder"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlOrder</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlAsc</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlDesc</span>
<a name="line-48"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Show</span>
<a name="line-49"></a>
<a name="line-50"></a><a name="SqlType"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlType</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlType</span> <span class='hs-conid'>String</span>
<a name="line-51"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlType1</span> <span class='hs-conid'>String</span> <span class='hs-conid'>Int</span>
<a name="line-52"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlType2</span> <span class='hs-conid'>String</span> <span class='hs-conid'>Int</span> <span class='hs-conid'>Int</span>
<a name="line-53"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Show</span>
<a name="line-54"></a>
<a name="line-55"></a><a name="Mark"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Mark</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>All</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Columns</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-56"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Show</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="SqlSelect"></a><span class='hs-comment'>-- | Data type for SQL SELECT statements.</span>
<a name="line-59"></a><a name="SqlSelect"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span>
<a name="line-60"></a> <span class='hs-varid'>options</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- ^ DISTINCT, ALL etc.</span>
<a name="line-61"></a> <span class='hs-varid'>attrs</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-layout'>,</span> <span class='hs-comment'>-- ^ result</span>
<a name="line-62"></a> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlTable</span><span class='hs-layout'>,</span><span class='hs-conid'>SqlSelect</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- ^ FROM</span>
<a name="line-63"></a> <span class='hs-varid'>criteria</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlExpr</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- ^ WHERE</span>
<a name="line-64"></a> <span class='hs-varid'>groupby</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Mark</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- ^ GROUP BY</span>
<a name="line-65"></a> <span class='hs-varid'>orderby</span> <span class='hs-keyglyph'>::</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><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- ^ ORDER BY</span>
<a name="line-66"></a> <span class='hs-varid'>extra</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ TOP n, etc.</span>
<a name="line-67"></a> <span class='hs-layout'>}</span>
<a name="line-68"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlBin</span> <span class='hs-conid'>String</span> <span class='hs-conid'>SqlSelect</span> <span class='hs-conid'>SqlSelect</span> <span class='hs-comment'>-- ^ Binary relational operator</span>
<a name="line-69"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlTable</span> <span class='hs-conid'>SqlTable</span> <span class='hs-comment'>-- ^ Select a whole table.</span>
<a name="line-70"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlEmpty</span> <span class='hs-comment'>-- ^ Empty select.</span>
<a name="line-71"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Show</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="foldSqlSelect"></a><span class='hs-comment'>-- | Transform a SqlSelect value.</span>
<a name="line-74"></a><span class='hs-definition'>foldSqlSelect</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>String</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-75"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>SqlTable</span><span class='hs-layout'>,</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-76"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlExpr</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Mark</span>
<a name="line-77"></a> <span class='hs-keyglyph'>-></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><span class='hs-keyglyph'>]</span>
<a name="line-78"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span>
<a name="line-79"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span>
<a name="line-80"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SqlTable</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span><span class='hs-layout'>,</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-81"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlSelect</span>
<a name="line-82"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span>
<a name="line-83"></a><span class='hs-definition'>foldSqlSelect</span> <span class='hs-layout'>(</span><span class='hs-varid'>select</span><span class='hs-layout'>,</span> <span class='hs-varid'>bin</span><span class='hs-layout'>,</span> <span class='hs-varid'>table</span><span class='hs-layout'>,</span> <span class='hs-varid'>empty</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fold</span>
<a name="line-84"></a> <span class='hs-keyword'>where</span>
<a name="line-85"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>SqlSelect</span> <span class='hs-varid'>opt</span> <span class='hs-varid'>attr</span> <span class='hs-varid'>tab</span> <span class='hs-varid'>crit</span> <span class='hs-varid'>grou</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>ext</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>select</span> <span class='hs-varid'>opt</span> <span class='hs-varid'>attr</span> <span class='hs-layout'>(</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'>t</span><span class='hs-layout'>,</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'>t</span><span class='hs-layout'>,</span> <span class='hs-varid'>fold</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>tab</span><span class='hs-layout'>)</span> <span class='hs-varid'>crit</span> <span class='hs-varid'>grou</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>ext</span>
<a name="line-86"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>SqlBin</span> <span class='hs-varid'>op</span> <span class='hs-varid'>left</span> <span class='hs-varid'>right</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bin</span> <span class='hs-varid'>op</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>left</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>right</span><span class='hs-layout'>)</span>
<a name="line-87"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>SqlTable</span> <span class='hs-varid'>tab</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>table</span> <span class='hs-varid'>tab</span>
<a name="line-88"></a> <span class='hs-varid'>fold</span> <span class='hs-conid'>SqlEmpty</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>empty</span>
<a name="line-89"></a>
<a name="line-90"></a><a name="SqlExpr"></a><span class='hs-comment'>-- | Expressions in SQL statements.</span>
<a name="line-91"></a><a name="SqlExpr"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlExpr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ColumnSqlExpr</span> <span class='hs-conid'>SqlColumn</span>
<a name="line-92"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BinSqlExpr</span> <span class='hs-conid'>String</span> <span class='hs-conid'>SqlExpr</span> <span class='hs-conid'>SqlExpr</span>
<a name="line-93"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PrefixSqlExpr</span> <span class='hs-conid'>String</span> <span class='hs-conid'>SqlExpr</span>
<a name="line-94"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PostfixSqlExpr</span> <span class='hs-conid'>String</span> <span class='hs-conid'>SqlExpr</span>
<a name="line-95"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>FunSqlExpr</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlExpr</span><span class='hs-keyglyph'>]</span>
<a name="line-96"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AggrFunSqlExpr</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlExpr</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Aggregate functions separate from normal functions.</span>
<a name="line-97"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ConstSqlExpr</span> <span class='hs-conid'>String</span>
<a name="line-98"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>CaseSqlExpr</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'>SqlExpr</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-conid'>SqlExpr</span>
<a name="line-99"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ListSqlExpr</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlExpr</span><span class='hs-keyglyph'>]</span>
<a name="line-100"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ExistsSqlExpr</span> <span class='hs-conid'>SqlSelect</span>
<a name="line-101"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ParamSqlExpr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>SqlName</span><span class='hs-layout'>)</span> <span class='hs-conid'>SqlExpr</span>
<a name="line-102"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PlaceHolderSqlExpr</span>
<a name="line-103"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ParensSqlExpr</span> <span class='hs-conid'>SqlExpr</span>
<a name="line-104"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>CastSqlExpr</span> <span class='hs-conid'>String</span> <span class='hs-conid'>SqlExpr</span>
<a name="line-105"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Show</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="foldSqlExpr"></a><span class='hs-comment'>-- | Transform a SqlExpr value.</span>
<a name="line-108"></a><span class='hs-definition'>foldSqlExpr</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>SqlColumn</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- column</span>
<a name="line-109"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- bin</span>
<a name="line-110"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- prefix</span>
<a name="line-111"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- postfix</span>
<a name="line-112"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>t</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- fun</span>
<a name="line-113"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>t</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- aggr</span>
<a name="line-114"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- constant</span>
<a name="line-115"></a> <span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>t</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-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- _case</span>
<a name="line-116"></a> <span class='hs-layout'>,</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>t</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- list</span>
<a name="line-117"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SqlSelect</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- exists</span>
<a name="line-118"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>SqlName</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- param</span>
<a name="line-119"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- placeHolder</span>
<a name="line-120"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>-- parens</span>
<a name="line-121"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span> <span class='hs-comment'>{- casts -}</span><span class='hs-layout'>)</span>
<a name="line-122"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SqlExpr</span>
<a name="line-123"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>t</span>
<a name="line-124"></a><span class='hs-definition'>foldSqlExpr</span> <span class='hs-layout'>(</span><span class='hs-varid'>column</span><span class='hs-layout'>,</span> <span class='hs-varid'>bin</span><span class='hs-layout'>,</span> <span class='hs-varid'>prefix</span><span class='hs-layout'>,</span> <span class='hs-varid'>postfix</span><span class='hs-layout'>,</span> <span class='hs-varid'>fun</span><span class='hs-layout'>,</span> <span class='hs-varid'>aggr</span><span class='hs-layout'>,</span> <span class='hs-varid'>constant</span><span class='hs-layout'>,</span> <span class='hs-sel'>_case</span><span class='hs-layout'>,</span> <span class='hs-varid'>list</span><span class='hs-layout'>,</span> <span class='hs-varid'>exists</span><span class='hs-layout'>,</span>
<a name="line-125"></a> <span class='hs-varid'>param</span><span class='hs-layout'>,</span> <span class='hs-varid'>placeHolder</span><span class='hs-layout'>,</span> <span class='hs-varid'>parens</span><span class='hs-layout'>,</span> <span class='hs-varid'>casts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fold</span>
<a name="line-126"></a> <span class='hs-keyword'>where</span>
<a name="line-127"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>ColumnSqlExpr</span> <span class='hs-varid'>col</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>column</span> <span class='hs-varid'>col</span>
<a name="line-128"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>BinSqlExpr</span> <span class='hs-varid'>op</span> <span class='hs-varid'>left</span> <span class='hs-varid'>right</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bin</span> <span class='hs-varid'>op</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>left</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>right</span><span class='hs-layout'>)</span>
<a name="line-129"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>PrefixSqlExpr</span> <span class='hs-varid'>op</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prefix</span> <span class='hs-varid'>op</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span>
<a name="line-130"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>PostfixSqlExpr</span> <span class='hs-varid'>op</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>postfix</span> <span class='hs-varid'>op</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span>
<a name="line-131"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>FunSqlExpr</span> <span class='hs-varid'>name</span> <span class='hs-varid'>exprs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fun</span> <span class='hs-varid'>name</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fold</span> <span class='hs-varid'>exprs</span><span class='hs-layout'>)</span>
<a name="line-132"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>AggrFunSqlExpr</span> <span class='hs-varid'>name</span> <span class='hs-varid'>exprs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>aggr</span> <span class='hs-varid'>name</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fold</span> <span class='hs-varid'>exprs</span><span class='hs-layout'>)</span>
<a name="line-133"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>ConstSqlExpr</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>constant</span> <span class='hs-varid'>c</span>
<a name="line-134"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>CaseSqlExpr</span> <span class='hs-varid'>cases</span> <span class='hs-varid'>def</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-sel'>_case</span> <span class='hs-layout'>(</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'>e1</span><span class='hs-layout'>,</span> <span class='hs-varid'>e2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>e1</span><span class='hs-layout'>,</span> <span class='hs-varid'>fold</span> <span class='hs-varid'>e2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>cases</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>def</span><span class='hs-layout'>)</span>
<a name="line-135"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>ListSqlExpr</span> <span class='hs-varid'>exprs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>list</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fold</span> <span class='hs-varid'>exprs</span><span class='hs-layout'>)</span>
<a name="line-136"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>ExistsSqlExpr</span> <span class='hs-varid'>select</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>exists</span> <span class='hs-varid'>select</span>
<a name="line-137"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>ParamSqlExpr</span> <span class='hs-varid'>name</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>param</span> <span class='hs-varid'>name</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span>
<a name="line-138"></a> <span class='hs-varid'>fold</span> <span class='hs-conid'>PlaceHolderSqlExpr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>placeHolder</span>
<a name="line-139"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>ParensSqlExpr</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>parens</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span>
<a name="line-140"></a> <span class='hs-varid'>fold</span> <span class='hs-layout'>(</span><span class='hs-conid'>CastSqlExpr</span> <span class='hs-varid'>typ</span> <span class='hs-varid'>exp</span> <span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>casts</span> <span class='hs-varid'>typ</span> <span class='hs-layout'>(</span><span class='hs-varid'>fold</span> <span class='hs-varid'>exp</span><span class='hs-layout'>)</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="SqlUpdate"></a><span class='hs-comment'>-- | Data type for SQL UPDATE statements.</span>
<a name="line-143"></a><a name="SqlUpdate"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlUpdate</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlUpdate</span> <span class='hs-conid'>SqlTable</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-conid'>SqlExpr</span><span class='hs-keyglyph'>]</span>
<a name="line-144"></a>
<a name="line-145"></a><a name="SqlDelete"></a><span class='hs-comment'>-- | Data type for SQL DELETE statements.</span>
<a name="line-146"></a><a name="SqlDelete"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlDelete</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlDelete</span> <span class='hs-conid'>SqlTable</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlExpr</span><span class='hs-keyglyph'>]</span>
<a name="line-147"></a>
<a name="line-148"></a><a name="SqlInsert"></a><span class='hs-comment'>-- | Data type for SQL INSERT statements.</span>
<a name="line-149"></a><a name="SqlInsert"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlInsert</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlInsert</span> <span class='hs-conid'>SqlTable</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlColumn</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlExpr</span><span class='hs-keyglyph'>]</span>
<a name="line-150"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlInsertQuery</span> <span class='hs-conid'>SqlTable</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>SqlColumn</span><span class='hs-keyglyph'>]</span> <span class='hs-conid'>SqlSelect</span>
<a name="line-151"></a>
<a name="line-152"></a><a name="SqlCreate"></a><span class='hs-comment'>-- | Data type for SQL CREATE statements.</span>
<a name="line-153"></a><a name="SqlCreate"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlCreate</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlCreateDB</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Create a database</span>
<a name="line-154"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlCreateTable</span> <span class='hs-conid'>SqlTable</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-layout'>(</span><span class='hs-conid'>SqlType</span><span class='hs-layout'>,</span><span class='hs-conid'>Bool</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ Create a table.</span>
<a name="line-155"></a>
<a name="line-156"></a><a name="SqlDrop"></a><span class='hs-comment'>-- | Data type representing the SQL DROP statement.</span>
<a name="line-157"></a><a name="SqlDrop"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SqlDrop</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlDropDB</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- ^ Delete a database</span>
<a name="line-158"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SqlDropTable</span> <span class='hs-conid'>SqlTable</span> <span class='hs-comment'>-- ^ Delete a table named SqlTable</span>
<a name="line-159"></a>
<a name="line-160"></a><a name="newSelect"></a><span class='hs-definition'>newSelect</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SqlSelect</span>
<a name="line-161"></a><span class='hs-definition'>newSelect</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>SqlSelect</span> <span class='hs-layout'>{</span>
<a name="line-162"></a> <span class='hs-varid'>options</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-163"></a> <span class='hs-varid'>attrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-164"></a> <span class='hs-varid'>tables</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-165"></a> <span class='hs-varid'>criteria</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-166"></a> <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-167"></a> <span class='hs-varid'>orderby</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-168"></a> <span class='hs-varid'>extra</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-169"></a> <span class='hs-layout'>}</span>
<a name="line-170"></a>
</pre></body>
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