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Make the behavior of HAVING without GROUP BY conform to the SQL spec.

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Formerly, if such a clause contained no aggregate functions we mistakenly
treated it as equivalent to WHERE.  Per spec it must cause the query to
be treated as a grouped query of a single group, the same as appearance
of aggregate functions would do.  Also, the HAVING filter must execute
after aggregate function computation even if it itself contains no
aggregate functions.
This commit is contained in:
Tom Lane
2005-03-10 23:21:26 +00:00
parent 609e32b929
commit 595ed2a855
20 changed files with 385 additions and 238 deletions
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3
src/include/nodes/parsenodes.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.272 2005/01/27 03:18:42 tgl Exp $
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.273 2005/03/10 23:21:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -128,6 +128,7 @@ typedef struct Query
List *in_info_list; /* list of InClauseInfos */
List *query_pathkeys; /* desired pathkeys for query_planner() */
bool hasJoinRTEs; /* true if any RTEs are RTE_JOIN kind */
bool hasHavingQual; /* true if havingQual was non-null */
} Query;