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Support window functions a la SQL:2008.

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Hitoshi Harada, with some kibitzing from Heikki and Tom.
This commit is contained in:
Tom Lane
2008-12-28 18:54:01 +00:00
parent 38e9348282
commit 95b07bc7f5
92 changed files with 6720 additions and 321 deletions
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12
contrib/tsearch2/tsearch2.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/contrib/tsearch2/tsearch2.c,v 1.6 2008/03/25 22:42:42 tgl Exp $
* $PostgreSQL: pgsql/contrib/tsearch2/tsearch2.c,v 1.7 2008/12/28 18:53:53 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -410,7 +410,15 @@ tsa_rewrite_accum(PG_FUNCTION_ARGS)
MemoryContext aggcontext;
MemoryContext oldcontext;
aggcontext = ((AggState *) fcinfo->context)->aggcontext;
if (fcinfo->context && IsA(fcinfo->context, AggState))
aggcontext = ((AggState *) fcinfo->context)->aggcontext;
else if (fcinfo->context && IsA(fcinfo->context, WindowAggState))
aggcontext = ((WindowAggState *) fcinfo->context)->wincontext;
else
{
elog(ERROR, "tsa_rewrite_accum called in non-aggregate context");
aggcontext = NULL; /* keep compiler quiet */
}
if (PG_ARGISNULL(0) || PG_GETARG_POINTER(0) == NULL)
{