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2 commits

Author SHA1 Message Date
Sergey Petrunya
8d29fddb97 BUG#780359: Crash with get_fanout_with_deps in maria-5.3-mwl90 
- Handle the case of degenerate joins. When join has impossible WHERE clause,
  a number of its members, including JOIN::map2table, are not initialized. 
  Do not try accessing them, detect degenerate joins early.
 2011-05-10 11:10:21 +01:00
Sergey Petrunya
70952a554d MWL#90: Non-merged semi-joins 
- Fix trivial bugs in post-GROUP-BY output cardinality calculations
- Add testcases
 2011-05-09 20:11:36 +01:00