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Push down outer qualification clauses into UNION and INTERSECT subqueries.

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Per pghackers discussion from back around 1-August.
This commit is contained in:
Tom Lane
2002-08-29 16:03:49 +00:00
parent d2236800ee
commit 0201dac1c3
3 changed files with 196 additions and 54 deletions
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5
src/backend/optimizer/prep/prepunion.c
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@ -14,7 +14,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.75 2002/08/02 18:15:06 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.76 2002/08/29 16:03:48 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -66,7 +66,6 @@ static List *generate_setop_tlist(List *colTypes, int flag,
static List *generate_append_tlist(List *colTypes, bool flag,
List *input_plans,
List *refnames_tlist);
static bool tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK);
static Node *adjust_inherited_attrs_mutator(Node *node,
adjust_inherited_attrs_context *context);
@ -579,7 +578,7 @@ generate_append_tlist(List *colTypes, bool flag,
* Resjunk columns are ignored if junkOK is true; otherwise presence of
* a resjunk column will always cause a 'false' result.
*/
static bool
bool
tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK)
{
List *i;