Re: pgsql: Allow SQL-language functions to return the output of an

This isn't the same thing as allowing RETURNING inside subqueries,
right?

greg

On 31 Oct 2008, at 07:37 PM, tgl(at)postgresql(dot)org (Tom Lane) wrote:

> Log Message:
> -----------
> Allow SQL-language functions to return the output of an INSERT/
> UPDATE/DELETE
> RETURNING clause, not just a SELECT as formerly.
>
> A side effect of this patch is that when a set-returning SQL
> function is used
> in a FROM clause, performance is improved because the output is
> collected into
> a tuplestore within the function, rather than using the less efficient
> value-per-call mechanism.
>
> Modified Files:
> --------------
> pgsql/doc/src/sgml:
> xfunc.sgml (r1.132 -> r1.133)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/xfunc.sgml?r1=1.132&r2=1.133
> )
> pgsql/src/backend/executor:
> execQual.c (r1.235 -> r1.236)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execQual.c?r1=1.235&r2=1.236
> )
> functions.c (r1.126 -> r1.127)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/functions.c?r1=1.126&r2=1.127
> )
> pgsql/src/backend/tcop:
> dest.c (r1.72 -> r1.73)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/tcop/dest.c?r1=1.72&r2=1.73
> )
> pgsql/src/backend/utils/fmgr:
> README (r1.15 -> r1.16)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/fmgr/README?r1=1.15&r2=1.16
> )
> pgsql/src/include/executor:
> functions.h (r1.31 -> r1.32)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/executor/functions.h?r1=1.31&r2=1.32
> )
> pgsql/src/include/nodes:
> execnodes.h (r1.193 -> r1.194)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/nodes/execnodes.h?r1=1.193&r2=1.194
> )
> pgsql/src/include/tcop:
> dest.h (r1.54 -> r1.55)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/tcop/dest.h?r1=1.54&r2=1.55
> )
> pgsql/src/test/regress/expected:
> rangefuncs.out (r1.19 -> r1.20)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/rangefuncs.out?r1=1.19&r2=1.20
> )
> pgsql/src/test/regress/output:
> create_function_1.source (r1.33 -> r1.34)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/output/create_function_1.source?r1=1.33&r2=1.34
> )
> pgsql/src/test/regress/sql:
> rangefuncs.sql (r1.8 -> r1.9)
> (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/rangefuncs.sql?r1=1.8&r2=1.9
> )
>
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