Sergei Petrunia c020d362b6 MDEV-7474: Semi-Join's DuplicateWeedout strategy skipped ... ...

JOIN::cur_dups_producing_tables was not maintained correctly in
the cases of greedy optimization (search_depth < n_tables).

Moved it to POSITION structure where it will be maintained automatically.

Removed POSITION::prefix_dups_producing_tables since its value can now
be calculated.

2015-03-17 13:26:33 +03:00

52 KiB

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