Igor Babaev 6d29c8527b MDEV-17354 Server crashes in add_key_field / .. / Item_func_null_predicate::add_key_fields ...

upon INSERT .. SELECT

The function Item *Item_direct_view_ref::derived_field_transformer_for_where()
erroneously did not strip off ref wrappers from references to materialized
derived tables / views. As a result the expressions that contained some
references of the type Item_direct_view_ref to columns of a materialized
derived table / view V were pushed into V incorrectly. This could cause
crashes for some INSERT ... SELECT statements.

2018-10-12 11:45:04 -07:00

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