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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
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- project.
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- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
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- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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-->
<refentry id="fn_sparql_eval">
<refmeta>
<refentrytitle>DB.DBA.SPARQL_EVAL</refentrytitle>
<refmiscinfo>rdf</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DB.DBA.SPARQL_EVAL</refname>
<refpurpose>Local execution of SPARQL via SPARQL protocol, produces a result set of SQL values.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_sparql_eval">
<funcprototype id="fproto_sparql_eval">
<funcdef><function>DB.DBA.SPARQL_EVAL</function></funcdef>
<paramdef>in <parameter>query</parameter> varchar</paramdef>
<paramdef>in <parameter>dflt_graph</parameter> varchar</paramdef>
<paramdef>in <parameter>maxrows</parameter> integer</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_sparql_eval">
<title>Description</title>
<para>Local execution of SPARQL via SPARQL protocol, produces a result set of SQL values.</para>
</refsect1>
<refsect1 id="params_sparql_eval">
<title>Parameters</title>
<refsect2><title>query</title>
<para>text of SPARQL query to execute.</para>
</refsect2>
<refsect2><title>dflt_graph</title>
<para>default graph IRI, if not NULL then this overrides what is specified in query</para>
</refsect2>
<refsect2><title>maxrows</title>
<para>limit on numbers of rows that should be returned.</para>
</refsect2>
</refsect1>
<refsect1 id="ret_sparql_eval"><title>Return Types</title>
<para>any</para>
</refsect1>
<!--
<refsect1 id="errors_sparql_eval">
<title>Errors</title>
<para>This function can generate the following errors:</para>
<errorcode></errorcode>
</refsect1>
-->
<refsect1 id="examples_sparql_eval">
<title>Examples</title>
<example id="ex_sparql_eval"><title>Simple Use</title>
<screen><![CDATA[
SQL>DB.DBA.SPARQL_EVAL('SELECT * WHERE {?s ?p ?o}','http://example/bookStore' ,10);
s p o
VARCHAR VARCHAR VARCHAR
_______________________________________________________________________________
http://example/book3 http://purl.org/dc/elements/1.1/title Fundamentals
http://example/book3 http://purl.org/dc/elements/1.1/date 2002-01-01T00:00:00
http://example/book2 http://purl.org/dc/elements/1.1/title Design notes
http://example/book2 http://purl.org/dc/elements/1.1/date 2001-01-01T00:00:00
4 Rows. -- 30 msec.
]]></screen>
</example>
</refsect1>
<refsect1 id="seealso_sparql_eval">
<title>See Also</title>
<para><link linkend="fn_rdf_audit_metadata"><function>DB.DBA.RDF_AUDIT_METADATA</function></link></para>
<para><link linkend="fn_rdf_backup_metadata"><function>DB.DBA.RDF_BACKUP_METADATA</function></link></para>
<para><link linkend="fn_rdf_load_rdfxml_mt"><function>DB.DBA.RDF_LOAD_RDFXML_MT</function></link></para>
<para><link linkend="fn_ttlp"><function>DB.DBA.TTLP</function></link></para>
<para><link linkend="fn_ttlp_mt"><function>DB.DBA.TTLP_MT</function></link></para>
<para><link linkend="fn_rdf_triples_to_rdf_xml_text"><function>DB.DBA.RDF_TRIPLES_TO_RDF_XML_TEXT</function></link></para>
<para><link linkend="fn_sparql_eval_to_array"><function>DB.DBA.SPARQL_EVAL_TO_ARRAY</function></link></para>
</refsect1>
</refentry>
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