Igor Babaev eb09580b67 MDEV-19588 Wrong results from query, using left join. ...

This bug could happen when queries with nested outer joins were
executed employing join buffers. At such an execution if the method
JOIN_CACHE::join_records() is called when a join buffer has become
full no 'first_unmatched' field should be cleaned up in the JOIN_TAB
structure to which the join cache with this buffer is attached.

2019-05-28 14:53:08 -07:00

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