Backport of subquery optimizations to 5.3.

There are still test failures because of:
- Wrong query results in outer join + semi join
- EXPLAIN output differences
This commit is contained in:
Sergey Petrunya 2010-01-17 17:51:10 +03:00
commit b83cb52e9e
57 changed files with 30851 additions and 628 deletions

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