Sergei Petrunia d6371d3a8e Combined fix for MDEV-7267 and MDEV-8864 ...

The problem was that GROUP BY code created Item_field objects
that referred to fields in the temp. tables used for GROUP BY.

Item_ref and set_items_ref_array() call caused pointers to temp.
table fields to occur in many places.

This patch introduces Item_temptable_field, which can handle
item->print() calls made after the underlying table is freed.

2015-10-06 18:03:10 +03:00

6.8 KiB

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