Varun Gupta a12b8ac8e9 MDEV-12575: Server crash in AGGR_OP::put_record or in JOIN_CACHE::free or Invalid write in JOIN::make_aggr_tables_info ...

During the optimize state of a query, we come know that the result set
would atmost contain one row, then for such a query we don't need
to compute GROUP BY, ORDER BY and DISTINCT.

2018-11-10 13:13:26 +05:30

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