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<?xml version="1.0" encoding="ISO-8859-1"?>
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<refentry id="fn_sparql_to_sql_text">
<refmeta>
<refentrytitle>sparql_to_sql_text</refentrytitle>
<refmiscinfo>rdf</refmiscinfo>
</refmeta>
<refnamediv>
<refname>sparql_to_sql_text</refname>
<refpurpose>Converts a sparql query directly to SQL.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_sparql_to_sql_text">
<funcprototype id="fproto_sparql_to_sql_text">
<funcdef>varchar <function>sparql_to_sql_text</function></funcdef>
<paramdef>in <parameter>squery</parameter> varchar</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_sparql_to_sql_text">
<title>Description</title>
<para>The <function>sparql_to_sql_text()</function> function can be used to convert a SPARQL query
directly to the SQL it would be executed as.</para>
</refsect1>
<refsect1 id="params_sparql_to_sql_text">
<title>Parameters</title>
<refsect2><title>squery</title>
<para>The sparql query to be converted.</para></refsect2>
</refsect1>
<refsect1 id="ret_sparql_to_sql_text"><title>Return Types</title>
<para>A string will be returned containing the converted sparql query.
</para>
</refsect1>
<refsect1 id="examples_sparql_to_sql_text">
<title>Examples</title>
<example id="ex_sparql_to_sql_text"><title>Using the sparql_to_sql_text() function</title>
<para>This simple example shows how to covert sparql query in SQL:</para>
<programlisting><![CDATA[
SQL> select sparql_to_sql_text('select * where {?s ?p ?o}');
sparql_to_sql_text
VARCHAR
_______________________________________________________________________________
SELECT __id2i ( /*retval[*/ "s-1-1-t0"."S" /* s */ /*]retval*/ ) AS /*tmpl*/ "s",
__id2i ( /*retval[*/ "s-1-1-t0"."P" /* p */ /*]retval*/ ) AS /*tmpl*/ "p",
__ro2sq ( /*retval[*/ "s-1-1-t0"."O" /* o */ /*]retval*/ ) AS /*tmpl*/ "o"
FROM DB.DBA.RDF_QUAD AS "s-1-1-t0"
OPTION (QUIETCAST)
1 Rows. -- 15 msec.
]]></programlisting>
</example>
</refsect1>
<refsect1 id="seealso_sparql_to_sql_text">
<title>See Also</title>
<para><link linkend="fn_sparql_eval_to_array"><function>DB.DBA.SPARQL_EVAL_TO_ARRAY</function></link></para>
<para><link linkend="fn_sparql_eval"><function>DB.DBA.SPARQL_EVAL</function></link></para>
<para><link linkend="fn_sparql_rdb2rdf_codegen"><function>DB.DBA.SPARQL_RDB2RDF_CODEGEN</function></link></para>
<para><link linkend="fn_sparql_rdb2rdf_list_tables"><function>DB.DBA.SPARQL_RDB2RDF_LIST_TABLES</function></link></para>
<para><link linkend="fn_sparql_rexec"><function>DB.DBA.SPARQL_REXEC</function></link></para>
<para><link linkend="fn_sparql_rexec_to_array"><function>DB.DBA.SPARQL_REXEC_TO_ARRAY</function></link></para>
<para><link linkend="fn_sparql_rexec_with_meta"><function>DB.DBA.SPARQL_REXEC_WITH_META</function></link></para>
<para><link linkend="fn_sparql_select_known_graphs"><function>DB.DBA.SPARQL_SELECT_KNOWN_GRAPHS</function></link></para>
</refsect1>
</refentry>
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