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Extend ExecMakeFunctionResult() to support set-returning functions that return

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via a tuplestore instead of value-per-call.  Refactor a few things to reduce
ensuing code duplication with nodeFunctionscan.c.  This represents the
reasonably noncontroversial part of my proposed patch to switch SQL functions
over to returning tuplestores.  For the moment, SQL functions still do things
the old way.  However, this change enables PL SRFs to be called in targetlists
(observe changes in plperl regression results).
This commit is contained in:
Tom Lane
2008-10-28 22:02:06 +00:00
parent a80a12247a
commit e3e3d2a789
10 changed files with 440 additions and 165 deletions
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6
doc/src/sgml/plpgsql.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.134 2008/09/24 19:51:22 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.135 2008/10/28 22:02:05 tgl Exp $ -->
<chapter id="plpgsql">
<title><application>PL/pgSQL</application> - <acronym>SQL</acronym> Procedural Language</title>
@ -1575,10 +1575,6 @@ LANGUAGE 'plpgsql' ;
SELECT * FROM getallfoo();
</programlisting>
Note that functions using <command>RETURN NEXT</command> or
<command>RETURN QUERY</command> must be called as a table source in
a <literal>FROM</literal> clause.
</para>
<note>