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<a href="#GdaDataSelect.description" class="shortcut">Description</a>
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<a href="#GdaDataSelect.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#GdaDataSelect.implemented-interfaces" class="shortcut">Implemented Interfaces</a>
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<a href="#GdaDataSelect.properties" class="shortcut">Properties</a>
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<a name="GdaDataSelect"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="GdaDataSelect.top_of_page"></a>GdaDataSelect</span></h2>
<p>GdaDataSelect — Data models returned by the execution of a SELECT statement</p>
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<div class="refsynopsisdiv">
<a name="GdaDataSelect.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct <a class="link" href="GdaDataSelect.html#GdaDataSelect-struct" title="struct GdaDataSelect">GdaDataSelect</a>;
enum <a class="link" href="GdaDataSelect.html#GdaDataSelectError" title="enum GdaDataSelectError">GdaDataSelectError</a>;
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GdaDataSelect.html#gda-data-select-set-row-selection-condition-sql" title="gda_data_select_set_row_selection_condition_sql ()">gda_data_select_set_row_selection_condition_sql</a>
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *sql_where</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GdaDataSelect.html#gda-data-select-set-row-selection-condition" title="gda_data_select_set_row_selection_condition ()">gda_data_select_set_row_selection_condition</a>
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a class="link" href="libgda-4.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a> *expr</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GdaDataSelect.html#gda-data-select-compute-row-selection-condition" title="gda_data_select_compute_row_selection_condition ()">gda_data_select_compute_row_selection_condition</a>
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GdaDataSelect.html#gda-data-select-set-modification-statement" title="gda_data_select_set_modification_statement ()">gda_data_select_set_modification_statement</a>
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a> *mod_stmt</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GdaDataSelect.html#gda-data-select-set-modification-statement-sql" title="gda_data_select_set_modification_statement_sql ()">gda_data_select_set_modification_statement_sql</a>
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *sql</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GdaDataSelect.html#gda-data-select-compute-modification-statements" title="gda_data_select_compute_modification_statements ()">gda_data_select_compute_modification_statements</a>
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GdaDataSelect.html#gda-data-select-compute-columns-attributes" title="gda_data_select_compute_columns_attributes ()">gda_data_select_compute_columns_attributes</a>
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GdaDataSelect.html#gda-data-select-rerun" title="gda_data_select_rerun ()">gda_data_select_rerun</a> (<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GdaDataSelect.html#gda-data-select-add-exception" title="gda_data_select_add_exception ()">gda_data_select_add_exception</a> (<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> *error</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="GdaDataSelect.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
+----GdaDataSelect
</pre>
</div>
<div class="refsect1">
<a name="GdaDataSelect.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GdaDataSelect implements
<a class="link" href="GdaDataModel.html" title="GdaDataModel">GdaDataModel</a>.</p>
</div>
<div class="refsect1">
<a name="GdaDataSelect.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--auto-reset" title='The "auto-reset" property'>auto-reset</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--connection" title='The "connection" property'>connection</a>" <a class="link" href="GdaConnection.html" title="GdaConnection"><span class="type">GdaConnection</span></a>* : Read / Write / Construct Only
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--delete-stmt" title='The "delete-stmt" property'>delete-stmt</a>" <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a>* : Read / Write
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--exec-params" title='The "exec-params" property'>exec-params</a>" <a class="link" href="GdaSet.html" title="GdaSet"><span class="type">GdaSet</span></a>* : Read / Write / Construct Only
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--insert-stmt" title='The "insert-stmt" property'>insert-stmt</a>" <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a>* : Read / Write
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--model-usage" title='The "model-usage" property'>model-usage</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write / Construct Only
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--prepared-stmt" title='The "prepared-stmt" property'>prepared-stmt</a>" <a class="link" href="GdaPStmt.html" title="GdaPStmt"><span class="type">GdaPStmt</span></a>* : Read / Write
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--select-stmt" title='The "select-stmt" property'>select-stmt</a>" <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a>* : Read
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--store-all-rows" title='The "store-all-rows" property'>store-all-rows</a>" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write
"<a class="link" href="GdaDataSelect.html#GdaDataSelect--update-stmt" title='The "update-stmt" property'>update-stmt</a>" <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a>* : Read / Write
</pre>
</div>
<div class="refsect1">
<a name="GdaDataSelect.description"></a><h2>Description</h2>
<p>
This data model implements the <a class="link" href="GdaDataModel.html" title="GdaDataModel">GdaDataModel</a> interface and is the required
base object when database providers implement a data model returned when a SELECT statement has been executed.
As the <a class="link" href="GdaDataModel.html" title="GdaDataModel">GdaDataModel</a> interface is implemented, consult the API
to access and modify the data held in a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect">GdaDataSelect</a> object.
</p>
<p>
The default behaviour however is to disallow modifications, and this section documents how to characterize
a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect">GdaDataSelect</a> to allow modifications. Once this is done, any modification
done to the data model will be propagated to the modified table in the database using INSERT, UPDATE or DELETE
statements.
</p>
<p>
After any modification, it is still possible to read values from the data model (even values for rows which have
been modified or inserted). The data model might then execute some SELECT statement to fetch some actualized values.
Note: there is a corner case where a modification made to a row would make the row not selected at first in the data model
(for example is the original SELECT statement included a clause "WHERE id < 100" and the modification sets the
"id" value to 110), then the row will still be in the data model even though it would not be if the SELECT statement
which execution created the data model in the first place was re-run. This is illustrated in the schema below:
</p>
<div class="mediaobject"><img src="writable_data_model.png" width="354.330708661417" alt="GdaDataSelect data model's contents after some modifications"></div>
<p>
</p>
</div>
<div class="refsect1">
<a name="GdaDataSelect.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GdaDataSelect-struct"></a><h3>struct GdaDataSelect</h3>
<pre class="programlisting">struct GdaDataSelect;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelectError"></a><h3>enum GdaDataSelectError</h3>
<pre class="programlisting">typedef enum {
GDA_DATA_SELECT_MODIFICATION_STATEMENT_ERROR,
GDA_DATA_SELECT_MISSING_MODIFICATION_STATEMENT_ERROR,
GDA_DATA_SELECT_CONNECTION_ERROR,
GDA_DATA_SELECT_ACCESS_ERROR,
GDA_DATA_SELECT_SQL_ERROR,
GDA_DATA_SELECT_SAFETY_LOCKED_ERROR
} GdaDataSelectError;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-set-row-selection-condition-sql"></a><h3>gda_data_select_set_row_selection_condition_sql ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_data_select_set_row_selection_condition_sql
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *sql_where</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Specifies the SQL condition corresponding to the WHERE part of a SELECT statement which would
return only 1 row (the expression of the primary key).
</p>
<p>
For example for a table created as "CREATE TABLE mytable (part1 int NOT NULL, part2 string NOT NULL,
name string, PRIMARY KEY (part1, part2))", and if <em class="parameter"><code>pmodel</code></em> corresponds to the execution of the
"SELECT name, part1, part2 FROM mytable", then the sensible value for <em class="parameter"><code>sql_where</code></em> would be
"part1 = ##-1::int AND part2 = ##-2::string" because the values of the 'part1' field are located
in <em class="parameter"><code>pmodel</code></em>'s column number 1 and the values of the 'part2' field are located
in <em class="parameter"><code>pmodel</code></em>'s column number 2 and the primary key is composed of (part1, part2).
</p>
<p>
For more information about the syntax of the parameters (named "##-1::int" for example), see the
<a class="link" href="GdaSqlParser.html#GdaSqlParser.description" title="Description">GdaSqlParser</a> documentation, and
<a class="link" href="GdaDataSelect.html#gda-data-select-set-modification-statement" title="gda_data_select_set_modification_statement ()"><code class="function">gda_data_select_set_modification_statement()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> data model</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>sql_where</code></em> :</span></p></td>
<td>an SQL condition (without the WHERE keyword)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a place to store errors, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if no error occurred</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-set-row-selection-condition"></a><h3>gda_data_select_set_row_selection_condition ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_data_select_set_row_selection_condition
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a class="link" href="libgda-4.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a> *expr</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Offers the same features as <a class="link" href="GdaDataSelect.html#gda-data-select-set-row-selection-condition-sql" title="gda_data_select_set_row_selection_condition_sql ()"><code class="function">gda_data_select_set_row_selection_condition_sql()</code></a> but using a <a class="link" href="libgda-4.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a>
structure instead of an SQL syntax.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> data model</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>expr</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-GdaSqlStatement.html#GdaSqlExpr" title="struct GdaSqlExpr"><span class="type">GdaSqlExpr</span></a> expression. <span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a place to store errors, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if no error occurred</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-compute-row-selection-condition"></a><h3>gda_data_select_compute_row_selection_condition ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_data_select_compute_row_selection_condition
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Offers the same features as <a class="link" href="GdaDataSelect.html#gda-data-select-set-row-selection-condition" title="gda_data_select_set_row_selection_condition ()"><code class="function">gda_data_select_set_row_selection_condition()</code></a> but the expression
is computed from the meta data associated to the connection being used when <em class="parameter"><code>model</code></em> was created.
</p>
<p>
NOTE1: make sure the meta data associated to the connection is up to date before using this
method, see <a class="link" href="GdaConnection.html#gda-connection-update-meta-store" title="gda_connection_update_meta_store ()"><code class="function">gda_connection_update_meta_store()</code></a>.
</p>
<p>
NOTE2: if the SELECT statement from which <em class="parameter"><code>model</code></em> has been created uses more than one table, or
if the table used does not have any primary key, then this method will fail
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a place to store errors, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if no error occurred.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-set-modification-statement"></a><h3>gda_data_select_set_modification_statement ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_data_select_set_modification_statement
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a> *mod_stmt</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Informs <em class="parameter"><code>model</code></em> that it should allow modifications to the data in some columns and some rows
using <em class="parameter"><code>mod_stmt</code></em> to propagate those modifications into the database.
</p>
<p>
If <em class="parameter"><code>mod_stmt</code></em> is:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>an UPDATE statement, then all the rows in <em class="parameter"><code>model</code></em> will be modifyable</p></li>
<li class="listitem"><p>a DELETE statement, then it will be possible to delete rows in <em class="parameter"><code>model</code></em></p></li>
<li class="listitem"><p>in INSERT statement, then it will be possible to add some rows to <em class="parameter"><code>model</code></em></p></li>
<li class="listitem"><p>any other statement, then this method will return an error</p></li>
</ul></div>
<p>
</p>
<p>
This method can be called several times to specify different types of modification.
</p>
<p>
If <em class="parameter"><code>mod_stmt</code></em> is an UPDATE or DELETE statement then it should have a WHERE part which identifies
a unique row in <em class="parameter"><code>model</code></em> (please note that this property can't be checked but may result
in <em class="parameter"><code>model</code></em> behaving in an unpredictable way).
</p>
<p>
NOTE1: However, if the <a class="link" href="GdaDataSelect.html#gda-data-select-set-row-selection-condition" title="gda_data_select_set_row_selection_condition ()"><code class="function">gda_data_select_set_row_selection_condition()</code></a>
or <a class="link" href="GdaDataSelect.html#gda-data-select-set-row-selection-condition-sql" title="gda_data_select_set_row_selection_condition_sql ()"><code class="function">gda_data_select_set_row_selection_condition_sql()</code></a> have been successfully be called before, the WHERE
part of <em class="parameter"><code>mod_stmt</code></em> <span class="emphasis"><em>WILL</em></span> be modified to use the row selection condition specified through one of
these methods (please not that it is then possible to avoid specifying a WHERE part in <em class="parameter"><code>mod_stmt</code></em> then).
</p>
<p>
NOTE2: if <a class="link" href="GdaDataSelect.html#gda-data-select-set-row-selection-condition" title="gda_data_select_set_row_selection_condition ()"><code class="function">gda_data_select_set_row_selection_condition()</code></a>
or <a class="link" href="GdaDataSelect.html#gda-data-select-set-row-selection-condition-sql" title="gda_data_select_set_row_selection_condition_sql ()"><code class="function">gda_data_select_set_row_selection_condition_sql()</code></a> have not yet been successfully be called before, then
the WHERE part of <em class="parameter"><code>mod_stmt</code></em> will be used as if one of these functions had been called.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> data model</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>mod_stmt</code></em> :</span></p></td>
<td>a <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a> (INSERT, UPDATE or DELETE)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a place to store errors, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if no error occurred.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-set-modification-statement-sql"></a><h3>gda_data_select_set_modification_statement_sql ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_data_select_set_modification_statement_sql
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *sql</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Offers the same feature as <a class="link" href="GdaDataSelect.html#gda-data-select-set-modification-statement" title="gda_data_select_set_modification_statement ()"><code class="function">gda_data_select_set_modification_statement()</code></a> but using an SQL statement
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> data model</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>sql</code></em> :</span></p></td>
<td>an SQL text</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a place to store errors, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if no error occurred.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-compute-modification-statements"></a><h3>gda_data_select_compute_modification_statements ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_data_select_compute_modification_statements
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Makes <em class="parameter"><code>model</code></em> try to compute INSERT, UPDATE and DELETE statements to be used when modifying <em class="parameter"><code>model</code></em>'s contents.
Note: any modification statement set using <a class="link" href="GdaDataSelect.html#gda-data-select-set-modification-statement" title="gda_data_select_set_modification_statement ()"><code class="function">gda_data_select_set_modification_statement()</code></a> will first be unset
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> data model</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a place to store errors, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if no error occurred. If <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned, then some modification statement may still have been computed</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-compute-columns-attributes"></a><h3>gda_data_select_compute_columns_attributes ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_data_select_compute_columns_attributes
(<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Computes correct attributes for each of <em class="parameter"><code>model</code></em>'s columns, which includes the "NOT NULL" attribute, the
default value, the precision and scale for numeric values.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> data model</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a place to store errors, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if no error occurred</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-rerun"></a><h3>gda_data_select_rerun ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_data_select_rerun (<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>
Requests that <em class="parameter"><code>model</code></em> be re-run to have an updated result. If an error occurs,
then <em class="parameter"><code>model</code></em> will not be changed.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> data model</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>a place to store errors, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if no error occurred</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-data-select-add-exception"></a><h3>gda_data_select_add_exception ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_data_select_add_exception (<em class="parameter"><code><a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a> *model</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> *error</code></em>);</pre>
<p>
Add an exception to <em class="parameter"><code>model</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td>
<td>a <a class="link" href="GdaDataSelect.html" title="GdaDataSelect"><span class="type">GdaDataSelect</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>error</code></em> :</span></p></td>
<td>an error to add as exception. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.2.6</p>
</div>
</div>
<div class="refsect1">
<a name="GdaDataSelect.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GdaDataSelect--auto-reset"></a><h3>The <code class="literal">"auto-reset"</code> property</h3>
<pre class="programlisting"> "auto-reset" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write</pre>
<p>Automatically re-run the SELECT statement if any parameter has changed since it was first executed.</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--connection"></a><h3>The <code class="literal">"connection"</code> property</h3>
<pre class="programlisting"> "connection" <a class="link" href="GdaConnection.html" title="GdaConnection"><span class="type">GdaConnection</span></a>* : Read / Write / Construct Only</pre>
<p>Connection from which this data model is created.</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--delete-stmt"></a><h3>The <code class="literal">"delete-stmt"</code> property</h3>
<pre class="programlisting"> "delete-stmt" <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a>* : Read / Write</pre>
<p>DELETE Statement to be executed to remove data.</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--exec-params"></a><h3>The <code class="literal">"exec-params"</code> property</h3>
<pre class="programlisting"> "exec-params" <a class="link" href="GdaSet.html" title="GdaSet"><span class="type">GdaSet</span></a>* : Read / Write / Construct Only</pre>
<p>GdaSet used when the SELECT statement was executed.</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--insert-stmt"></a><h3>The <code class="literal">"insert-stmt"</code> property</h3>
<pre class="programlisting"> "insert-stmt" <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a>* : Read / Write</pre>
<p>INSERT Statement to be executed to add data.</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--model-usage"></a><h3>The <code class="literal">"model-usage"</code> property</h3>
<pre class="programlisting"> "model-usage" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write / Construct Only</pre>
<p>Determines how the data model may be used.</p>
<p>Allowed values: >= 1</p>
<p>Default value: 1</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--prepared-stmt"></a><h3>The <code class="literal">"prepared-stmt"</code> property</h3>
<pre class="programlisting"> "prepared-stmt" <a class="link" href="GdaPStmt.html" title="GdaPStmt"><span class="type">GdaPStmt</span></a>* : Read / Write</pre>
<p>Associated prepared statement (for internal usage).</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--select-stmt"></a><h3>The <code class="literal">"select-stmt"</code> property</h3>
<pre class="programlisting"> "select-stmt" <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a>* : Read</pre>
<p>SELECT statement which was executed to yield to the data model.</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--store-all-rows"></a><h3>The <code class="literal">"store-all-rows"</code> property</h3>
<pre class="programlisting"> "store-all-rows" <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> : Read / Write</pre>
<p>Tells if model has analyzed all the rows.</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaDataSelect--update-stmt"></a><h3>The <code class="literal">"update-stmt"</code> property</h3>
<pre class="programlisting"> "update-stmt" <a class="link" href="GdaStatement.html" title="GdaStatement"><span class="type">GdaStatement</span></a>* : Read / Write</pre>
<p>UPDATE Statement to be executed to update data.</p>
</div>
</div>
<div class="refsect1">
<a name="GdaDataSelect.see-also"></a><h2>See Also</h2>
<p>
The <a class="link" href="data-select.html" title="Advanced GdaDataSelect usage">Advanced GdaDataSelect usage</a> section.
</p>
</div>
</div>
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