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Fixed LP bug #880724.

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Do not create KEYUSEs for a materialized view over a constant table.
This commit is contained in:
Igor Babaev 2011-10-24 12:54:28 -07:00
commit c0a1bd1ed6
3 changed files with 76 additions and 1 deletions
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4
sql/sql_select.cc
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@ -3827,7 +3827,9 @@ add_key_field(JOIN *join,
uint optimize= 0;
if (eq_func &&
((join->is_allowed_hash_join_access() &&
field->hash_join_is_possible()) ||
field->hash_join_is_possible() &&
!(field->table->pos_in_table_list->is_materialized_derived() &&
field->table->created)) ||
(field->table->pos_in_table_list->is_materialized_derived() &&
!field->table->created)))
{