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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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14
src/backend/utils/adt/float.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.157 2008/05/09 21:31:23 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.158 2008/12/28 18:53:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1765,7 +1765,9 @@ float8_accum(PG_FUNCTION_ARGS)
* parameter in-place to reduce palloc overhead. Otherwise we construct a
* new array with the updated transition data and return it.
*/
if (fcinfo->context && IsA(fcinfo->context, AggState))
if (fcinfo->context &&
(IsA(fcinfo->context, AggState) ||
IsA(fcinfo->context, WindowAggState)))
{
transvalues[0] = N;
transvalues[1] = sumX;
@ -1818,7 +1820,9 @@ float4_accum(PG_FUNCTION_ARGS)
* parameter in-place to reduce palloc overhead. Otherwise we construct a
* new array with the updated transition data and return it.
*/
if (fcinfo->context && IsA(fcinfo->context, AggState))
if (fcinfo->context &&
(IsA(fcinfo->context, AggState) ||
IsA(fcinfo->context, WindowAggState)))
{
transvalues[0] = N;
transvalues[1] = sumX;
@ -2035,7 +2039,9 @@ float8_regr_accum(PG_FUNCTION_ARGS)
* parameter in-place to reduce palloc overhead. Otherwise we construct a
* new array with the updated transition data and return it.
*/
if (fcinfo->context && IsA(fcinfo->context, AggState))
if (fcinfo->context &&
(IsA(fcinfo->context, AggState) ||
IsA(fcinfo->context, WindowAggState)))
{
transvalues[0] = N;
transvalues[1] = sumX;