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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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18
src/backend/utils/adt/numeric.c
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@ -14,7 +14,7 @@
* Copyright (c) 1998-2008, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/numeric.c,v 1.114 2008/05/09 21:31:23 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/numeric.c,v 1.115 2008/12/28 18:53:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -2611,7 +2611,9 @@ int2_sum(PG_FUNCTION_ARGS)
* as incorrect, so just ifdef it out.)
*/
#ifndef USE_FLOAT8_BYVAL /* controls int8 too */
if (fcinfo->context && IsA(fcinfo->context, AggState))
if (fcinfo->context &&
(IsA(fcinfo->context, AggState) ||
IsA(fcinfo->context, WindowAggState)))
{
int64 *oldsum = (int64 *) PG_GETARG_POINTER(0);
@ -2660,7 +2662,9 @@ int4_sum(PG_FUNCTION_ARGS)
* as incorrect, so just ifdef it out.)
*/
#ifndef USE_FLOAT8_BYVAL /* controls int8 too */
if (fcinfo->context && IsA(fcinfo->context, AggState))
if (fcinfo->context &&
(IsA(fcinfo->context, AggState) ||
IsA(fcinfo->context, WindowAggState)))
{
int64 *oldsum = (int64 *) PG_GETARG_POINTER(0);
@ -2753,7 +2757,9 @@ int2_avg_accum(PG_FUNCTION_ARGS)
* parameter in-place to reduce palloc overhead. Otherwise we need to make
* a copy of it before scribbling on it.
*/
if (fcinfo->context && IsA(fcinfo->context, AggState))
if (fcinfo->context &&
(IsA(fcinfo->context, AggState) ||
IsA(fcinfo->context, WindowAggState)))
transarray = PG_GETARG_ARRAYTYPE_P(0);
else
transarray = PG_GETARG_ARRAYTYPE_P_COPY(0);
@ -2781,7 +2787,9 @@ int4_avg_accum(PG_FUNCTION_ARGS)
* parameter in-place to reduce palloc overhead. Otherwise we need to make
* a copy of it before scribbling on it.
*/
if (fcinfo->context && IsA(fcinfo->context, AggState))
if (fcinfo->context &&
(IsA(fcinfo->context, AggState) ||
IsA(fcinfo->context, WindowAggState)))
transarray = PG_GETARG_ARRAYTYPE_P(0);
else
transarray = PG_GETARG_ARRAYTYPE_P_COPY(0);