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Rework join-removal logic as per recent discussion. In particular this

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fixes things so that it works for cases where nested removals are possible.
The overhead of the optimization should be significantly less, as well.
This commit is contained in:
Tom Lane
2010-03-28 22:59:34 +00:00
parent a760893dbd
commit b78f6264eb
17 changed files with 585 additions and 317 deletions
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src/include/nodes/nodes.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/nodes.h,v 1.233 2010/01/05 21:53:59 rhaas Exp $
* $PostgreSQL: pgsql/src/include/nodes/nodes.h,v 1.234 2010/03/28 22:59:33 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -217,7 +217,6 @@ typedef enum NodeTag
T_ResultPath,
T_MaterialPath,
T_UniquePath,
T_NoOpPath,
T_EquivalenceClass,
T_EquivalenceMember,
T_PathKey,