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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>SQL rendering API: GNOME Data Access 5 manual</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#libgda-5.0-SQL-rendering-API.description" class="shortcut">Description</a></span>
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<div class="refentry">
<a name="libgda-5.0-SQL-rendering-API"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libgda-5.0-SQL-rendering-API.top_of_page"></a>SQL rendering API</span></h2>
<p>SQL rendering API — Adapting the SQL to the database's own SQL dialect</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libgda-5.0-SQL-rendering-API.stability-level"></a><h2>Stability Level</h2>
<a href="http://foldoc.org/Stable"><span class="acronym">Stable</span></a>, unless otherwise indicated
</div>
<div class="refsect1">
<a name="libgda-5.0-SQL-rendering-API.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingValue" title="GdaSqlRenderingValue ()">*GdaSqlRenderingValue</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingPSpecFunc" title="GdaSqlRenderingPSpecFunc ()">*GdaSqlRenderingPSpecFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingExpr" title="GdaSqlRenderingExpr ()">*GdaSqlRenderingExpr</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()">*GdaSqlRenderingFunc</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="libgda-5.0-SQL-rendering-API.html#gda-statement-to-sql-real" title="gda_statement_to_sql_real ()">gda_statement_to_sql_real</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libgda-5.0-SQL-rendering-API.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingContext" title="struct GdaSqlRenderingContext">GdaSqlRenderingContext</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libgda-5.0-SQL-rendering-API.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;libgda/gda-statement-extra.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="libgda-5.0-SQL-rendering-API.description"></a><h2>Description</h2>
<p><span class="application">Libgda</span> is able to render a <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a> statement to SQL in a generic way (as close as possible to the SQL
standard). However as each database has ultimately its own SQL dialect, some parts of the rendering has
to be specialized.</p>
<p>Customization is achieved by providing custom implementations of SQL rendering functions for each kind of
part in a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatement" title="GdaSqlStatement"><span class="type">GdaSqlStatement</span></a> structure, all packed in a <a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingContext" title="struct GdaSqlRenderingContext"><span class="type">GdaSqlRenderingContext</span></a> context structure. Functions
which are not customized will be implemented by the default ones.</p>
</div>
<div class="refsect1">
<a name="libgda-5.0-SQL-rendering-API.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="GdaSqlRenderingValue"></a><h3>GdaSqlRenderingValue ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
<span class="c_punctuation">(</span>*GdaSqlRenderingValue<span class="c_punctuation">)</span> (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
                         <em class="parameter"><code><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingContext" title="struct GdaSqlRenderingContext"><span class="type">GdaSqlRenderingContext</span></a> *context</code></em>,
                         <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Rendering function type to render a <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a></p>
<div class="refsect3">
<a name="GdaSqlRenderingValue.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to render</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>the rendering context</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a place to store errors, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GdaSqlRenderingValue.returns"></a><h4>Returns</h4>
<p>a new string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if an error occurred</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GdaSqlRenderingPSpecFunc"></a><h3>GdaSqlRenderingPSpecFunc ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
<span class="c_punctuation">(</span>*GdaSqlRenderingPSpecFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlParamSpec" title="struct GdaSqlParamSpec"><span class="type">GdaSqlParamSpec</span></a> *pspec</code></em>,
                             <em class="parameter"><code><a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a> *expr</code></em>,
                             <em class="parameter"><code><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingContext" title="struct GdaSqlRenderingContext"><span class="type">GdaSqlRenderingContext</span></a> *context</code></em>,
                             <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> *is_default</code></em>,
                             <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> *is_null</code></em>,
                             <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Rendering function type to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlParamSpec" title="struct GdaSqlParamSpec"><span class="type">GdaSqlParamSpec</span></a></p>
<div class="refsect3">
<a name="GdaSqlRenderingPSpecFunc.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pspec</p></td>
<td class="parameter_description"><p><a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlParamSpec" title="struct GdaSqlParamSpec"><span class="type">GdaSqlParamSpec</span></a> to render</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>expr</p></td>
<td class="parameter_description"><p> <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a> which may hold the default value for the parameter, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/allow-none"><span class="acronym">allow-none</span></a>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>the rendering context</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>is_default</p></td>
<td class="parameter_description"><p>pointer to a <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> which is set to TRUE if value should be considered as a default value</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>is_null</p></td>
<td class="parameter_description"><p>pointer to a <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> which is set to TRUE if value should be considered as NULL</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a place to store errors, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GdaSqlRenderingPSpecFunc.returns"></a><h4>Returns</h4>
<p>a new string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if an error occurred</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GdaSqlRenderingExpr"></a><h3>GdaSqlRenderingExpr ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
<span class="c_punctuation">(</span>*GdaSqlRenderingExpr<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a> *expr</code></em>,
                        <em class="parameter"><code><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingContext" title="struct GdaSqlRenderingContext"><span class="type">GdaSqlRenderingContext</span></a> *context</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> *is_default</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> *is_null</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Rendering function type to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a></p>
<div class="refsect3">
<a name="GdaSqlRenderingExpr.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>expr</p></td>
<td class="parameter_description"><p><a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a> to render</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>the rendering context</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>is_default</p></td>
<td class="parameter_description"><p>pointer to a <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> which is set to TRUE if value should be considered as a default value</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>is_null</p></td>
<td class="parameter_description"><p>pointer to a <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> which is set to TRUE if value should be considered as NULL</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a place to store errors, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GdaSqlRenderingExpr.returns"></a><h4>Returns</h4>
<p>a new string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if an error occurred</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GdaSqlRenderingFunc"></a><h3>GdaSqlRenderingFunc ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
<span class="c_punctuation">(</span>*GdaSqlRenderingFunc<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlAnyPart" title="struct GdaSqlAnyPart"><span class="type">GdaSqlAnyPart</span></a> *node</code></em>,
                        <em class="parameter"><code><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingContext" title="struct GdaSqlRenderingContext"><span class="type">GdaSqlRenderingContext</span></a> *context</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Function to render any <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlAnyPart" title="struct GdaSqlAnyPart"><span class="type">GdaSqlAnyPart</span></a>.</p>
<div class="refsect3">
<a name="GdaSqlRenderingFunc.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>node</p></td>
<td class="parameter_description"><p>a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlAnyPart" title="struct GdaSqlAnyPart"><span class="type">GdaSqlAnyPart</span></a> pointer, to be cast to the correct type depending on which part the function has to render</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>the rendering context</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a place to store errors, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="GdaSqlRenderingFunc.returns"></a><h4>Returns</h4>
<p>a new string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if an error occurred</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gda-statement-to-sql-real"></a><h3>gda_statement_to_sql_real ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gda_statement_to_sql_real (<em class="parameter"><code><a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a> *stmt</code></em>,
                           <em class="parameter"><code><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingContext" title="struct GdaSqlRenderingContext"><span class="type">GdaSqlRenderingContext</span></a> *context</code></em>,
                           <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Renders <em class="parameter"><code>stmt</code></em>
 to its SQL representation, using <em class="parameter"><code>context</code></em>
 to specify how each part of <em class="parameter"><code>stmt</code></em>
 must
be rendered. This function is mainly used by database provider's implementations which require
to specialize some aspects of SQL rendering to be adapted to the database,'s own SQL dialect
(for example SQLite rewrites the 'FALSE' and 'TRUE' literals as '0' and 'NOT 0').</p>
<div class="refsect3">
<a name="gda-statement-to-sql-real.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>stmt</p></td>
<td class="parameter_description"><p>a <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingContext" title="struct GdaSqlRenderingContext"><span class="type">GdaSqlRenderingContext</span></a> context</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a place to store errors, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gda-statement-to-sql-real.returns"></a><h4>Returns</h4>
<p> a new string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if an error occurred</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="libgda-5.0-SQL-rendering-API.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GdaSqlRenderingContext"></a><h3>struct GdaSqlRenderingContext</h3>
<pre class="programlisting">struct GdaSqlRenderingContext {
	GdaStatementSqlFlag      flags;
	GdaSet                  *params;
	GSList                  *params_used;
	GdaServerProvider       *provider; /* may be NULL */
	GdaConnection           *cnc;      /* may be NULL */

	/* rendering functions */
	GdaSqlRenderingValue     render_value;
	GdaSqlRenderingPSpecFunc render_param_spec; 
	GdaSqlRenderingExpr      render_expr;

	GdaSqlRenderingFunc      render_unknown;

	GdaSqlRenderingFunc      render_begin;
	GdaSqlRenderingFunc      render_rollback;
	GdaSqlRenderingFunc      render_commit;
	GdaSqlRenderingFunc      render_savepoint;
	GdaSqlRenderingFunc      render_rollback_savepoint;
	GdaSqlRenderingFunc      render_delete_savepoint;

	GdaSqlRenderingFunc      render_select;
	GdaSqlRenderingFunc      render_insert;
	GdaSqlRenderingFunc      render_delete;
	GdaSqlRenderingFunc      render_update;
	GdaSqlRenderingFunc      render_compound;

	GdaSqlRenderingFunc      render_field;
	GdaSqlRenderingFunc      render_table;
	GdaSqlRenderingFunc      render_function;
	GdaSqlRenderingFunc      render_operation;
	GdaSqlRenderingFunc      render_case;
	GdaSqlRenderingFunc      render_select_field;
	GdaSqlRenderingFunc      render_select_target;
	GdaSqlRenderingFunc      render_select_join;
	GdaSqlRenderingFunc      render_select_from;
	GdaSqlRenderingFunc      render_select_order;
	GdaSqlRenderingFunc      render_distinct;
};
</pre>
<p>Specifies the context in which a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatement" title="GdaSqlStatement"><span class="type">GdaSqlStatement</span></a> is being converted to SQL.</p>
<div class="refsect3">
<a name="GdaSqlRenderingContext.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a class="link" href="GdaStatement.html#GdaStatementSqlFlag" title="enum GdaStatementSqlFlag"><span class="type">GdaStatementSqlFlag</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.flags"></a>flags</code></em>;</p></td>
<td class="struct_member_description"><p>Global rendering options</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="GdaSet.html" title="GdaSet"><span class="type">GdaSet</span></a> *<em class="structfield"><code><a name="GdaSqlRenderingContext.params"></a>params</code></em>;</p></td>
<td class="struct_member_description"><p>Parameters to be used while doing the rendering</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a href="/usr/share/gtk-doc/html/glib/glib-Singly-Linked-Lists.html#GSList"><span class="type">GSList</span></a> *<em class="structfield"><code><a name="GdaSqlRenderingContext.params-used"></a>params_used</code></em>;</p></td>
<td class="struct_member_description"><p> When rendering is complete, contains the ordered list of parameters which have been used while doing the rendering. </p></td>
<td class="struct_member_annotations"><span class="annotation">[<a href="http://foldoc.org/element-type"><span class="acronym">element-type</span></a> GdaHolder]</span></td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="GdaServerProvider.html" title="GdaServerProvider"><span class="type">GdaServerProvider</span></a> *<em class="structfield"><code><a name="GdaSqlRenderingContext.provider"></a>provider</code></em>;</p></td>
<td class="struct_member_description"><p>Pointer to the server provider to be used</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="GdaConnection.html" title="GdaConnection"><span class="type">GdaConnection</span></a> *<em class="structfield"><code><a name="GdaSqlRenderingContext.cnc"></a>cnc</code></em>;</p></td>
<td class="struct_member_description"><p>Pointer to the connection to be used</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingValue" title="GdaSqlRenderingValue ()"><span class="type">GdaSqlRenderingValue</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-value"></a>render_value</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingPSpecFunc" title="GdaSqlRenderingPSpecFunc ()"><span class="type">GdaSqlRenderingPSpecFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-param-spec"></a>render_param_spec</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlParamSpec" title="struct GdaSqlParamSpec"><span class="type">GdaSqlParamSpec</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingExpr" title="GdaSqlRenderingExpr ()"><span class="type">GdaSqlRenderingExpr</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-expr"></a>render_expr</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-unknown"></a>render_unknown</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementUnknown" title="GdaSqlStatementUnknown"><span class="type">GdaSqlStatementUnknown</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-begin"></a>render_begin</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a BEGIN <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementTransaction" title="GdaSqlStatementTransaction"><span class="type">GdaSqlStatementTransaction</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-rollback"></a>render_rollback</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a ROLLBACK <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementTransaction" title="GdaSqlStatementTransaction"><span class="type">GdaSqlStatementTransaction</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-commit"></a>render_commit</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a COMMIT <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementTransaction" title="GdaSqlStatementTransaction"><span class="type">GdaSqlStatementTransaction</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-savepoint"></a>render_savepoint</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a ADD SAVEPOINT <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementTransaction" title="GdaSqlStatementTransaction"><span class="type">GdaSqlStatementTransaction</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-rollback-savepoint"></a>render_rollback_savepoint</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a ROLBACK SAVEPOINT <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementTransaction" title="GdaSqlStatementTransaction"><span class="type">GdaSqlStatementTransaction</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-delete-savepoint"></a>render_delete_savepoint</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a DELETE SAVEPOINT <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementTransaction" title="GdaSqlStatementTransaction"><span class="type">GdaSqlStatementTransaction</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-select"></a>render_select</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementSelect" title="GdaSqlStatementSelect"><span class="type">GdaSqlStatementSelect</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-insert"></a>render_insert</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementInsert" title="GdaSqlStatementInsert"><span class="type">GdaSqlStatementInsert</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-delete"></a>render_delete</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementDelete" title="GdaSqlStatementDelete"><span class="type">GdaSqlStatementDelete</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-update"></a>render_update</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementUpdate" title="GdaSqlStatementUpdate"><span class="type">GdaSqlStatementUpdate</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-compound"></a>render_compound</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlStatementCompound" title="GdaSqlStatementCompound"><span class="type">GdaSqlStatementCompound</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-field"></a>render_field</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlField" title="struct GdaSqlField"><span class="type">GdaSqlField</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-table"></a>render_table</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlTable" title="struct GdaSqlTable"><span class="type">GdaSqlTable</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-function"></a>render_function</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlFunction" title="struct GdaSqlFunction"><span class="type">GdaSqlFunction</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-operation"></a>render_operation</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlOperation" title="struct GdaSqlOperation"><span class="type">GdaSqlOperation</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-case"></a>render_case</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlCase" title="struct GdaSqlCase"><span class="type">GdaSqlCase</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-select-field"></a>render_select_field</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlSelectField" title="struct GdaSqlSelectField"><span class="type">GdaSqlSelectField</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-select-target"></a>render_select_target</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlSelectTarget" title="struct GdaSqlSelectTarget"><span class="type">GdaSqlSelectTarget</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-select-join"></a>render_select_join</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlSelectJoin" title="struct GdaSqlSelectJoin"><span class="type">GdaSqlSelectJoin</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-select-from"></a>render_select_from</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlSelectFrom" title="struct GdaSqlSelectFrom"><span class="type">GdaSqlSelectFrom</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-select-order"></a>render_select_order</code></em>;</p></td>
<td class="struct_member_description"><p>function to render a <a class="link" href="libgda-5.0-GdaSqlStatement.html#GdaSqlSelectOrder" title="struct GdaSqlSelectOrder"><span class="type">GdaSqlSelectOrder</span></a></p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><a class="link" href="libgda-5.0-SQL-rendering-API.html#GdaSqlRenderingFunc" title="GdaSqlRenderingFunc ()"><span class="type">GdaSqlRenderingFunc</span></a> <em class="structfield"><code><a name="GdaSqlRenderingContext.render-distinct"></a>render_distinct</code></em>;</p></td>
<td class="struct_member_description"><p>function to render the DISTINCT clause in a SELECT</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
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