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Aggregate functions now support multiple input arguments. I also took

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the opportunity to treat COUNT(*) as a zero-argument aggregate instead
of the old hack that equated it to COUNT(1); this is materially cleaner
(no more weird ANYOID cases) and ought to be at least a tiny bit faster.
Original patch by Sergey Koposov; review, documentation, simple regression
tests, pg_dump and psql support by moi.
This commit is contained in:
Tom Lane
2006-07-27 19:52:07 +00:00
parent c2d1138351
commit 108fe47301
39 changed files with 702 additions and 484 deletions
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4
src/backend/nodes/copyfuncs.c
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@@ -15,7 +15,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.343 2006/07/14 14:52:19 momjian Exp $
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.344 2006/07/27 19:52:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -743,7 +743,7 @@ _copyAggref(Aggref *from)
COPY_SCALAR_FIELD(aggfnoid);
COPY_SCALAR_FIELD(aggtype);
COPY_NODE_FIELD(target);
COPY_NODE_FIELD(args);
COPY_SCALAR_FIELD(agglevelsup);
COPY_SCALAR_FIELD(aggstar);
COPY_SCALAR_FIELD(aggdistinct);