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<title>Commands: GNOME Data Access 5 manual</title>
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<div class="sect1">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="id-1.8.4.4"></a>Commands</h2></div></div></div>
<p>
The console tool allows the user to enter SQL commands (which can span several lines and must be terminated with
a semi colon). The commands are executed synchronously and the results displayed right after execution, for example:
</p>
<pre class="programlisting">
cnc1> select *
> from customers order by name;
id | name | last_update | default_served_by | country | city
---+-----------------+-----------------------+-------------------+---------+-----
2 | Ed Lamton | 2008-08-12 00:00:00+0 | 4 | SP | MDR
9 | Greg Popoff | 2007-12-25 00:00:00+0 | 2 | SP | MDR
3 | Lew Bonito | 2008-08-13 00:00:00+0 | 1 | FR | TLS
4 | Mark Lawrencep | 2007-12-25 00:00:00+0 | | SP | MDR
10 | Vladimir Zirkov | 2001-01-31 00:00:00+0 | 4 | |
(5 rows)
cnc1>
</pre>
<p>
The SQL dialect to be used must be understood by the database to which the connection is opened, so
it is possible to use database's specific commands, for example with a PostgreSQL database:
</p>
<pre class="programlisting">
cnc2> show search_path;
search_path
--------------
"$user",public
(1 row)
cnc2>
</pre>
<p>
</p>
<p>
There are also some internal commands which all start either with a dot or backslash and perform some
actions such as changing the default output mode (to HTML for example) or getting meta information
about the database structure. For example, use the <span class="command"><strong>.?</strong></span> to display a help message
about all internal commands (with truncated output here):
</p>
<pre class="programlisting">
gda> .?
Formatting
\H [HTML|XML|CSV|DEFAULT]
Set output format
General
\? List all available commands
\bind CNC_NAME CNC_NAME1 CNC_NAME2 [CNC_NAME ...]
Bind several connections together into the CNC_NAME virtual connection
</pre>
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