e6381966c1
Major planner/optimizer revision: get rid of PathOrder node type,
...
store all ordering information in pathkeys lists (which are now lists of
lists of PathKeyItem nodes, not just lists of lists of vars). This was
a big win --- the code is smaller and IMHO more understandable than it
was, even though it handles more cases. I believe the node changes will
not force an initdb for anyone; planner nodes don't show up in stored
rules.
1999-08-16 02:17:58 +00:00
612b8434e4
optimizer cleanup
1999-02-19 05:18:06 +00:00
8ab72a38df
optimizer cleanup
1999-02-19 02:05:20 +00:00
cd550c7672
Update optimizer readme.
1999-02-15 22:19:01 +00:00
fe35ffe7e0
Major optimizer improvement for joining a large number of tables.
1999-02-09 03:51:42 +00:00
54e5d25666
Optimizer cleanup.
1999-02-08 04:29:25 +00:00
ce3afccf7f
More optimizer cleanups.
1999-02-04 03:19:11 +00:00
18fbe4142f
More optimizer renaming HInfo -> HashInfo.
1999-02-04 01:47:02 +00:00
8d9237d485
Optimizer rename ClauseInfo -> RestrictInfo. Update optimizer README.
1999-02-03 20:15:53 +00:00
2d32d909b5
Cleanup optimizer function names and clarify code.
1998-08-10 02:26:40 +00:00
e46df2ff6e
OPTIMIZER_DEBUG additions.
1998-08-07 05:02:32 +00:00
d3f0e87d17
Cost cleanup.
1997-12-18 12:21:02 +00:00
d158fce8eb
Add optimizer README file.
1997-12-17 18:02:33 +00:00
Tom Lane
Bruce Momjian