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Commit 0abfaa98 authored by hf@deer.(none)'s avatar hf@deer.(none)
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Fix #2093 

Update after discussion with Monty
parent e6e0937d
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sql/sql_select.cc
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...@@ -1803,14 +1803,7 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab, ...@@ -1803,14 +1803,7 @@ update_ref_and_keys(THD *thd, DYNAMIC_ARRAY *keyuse,JOIN_TAB *join_tab,
} }
/* fill keyuse with found key parts */ /* fill keyuse with found key parts */
for (; field != end ; field++) for (; field != end ; field++)
{
add_key_part(keyuse,field); add_key_part(keyuse,field);
/* Mark that we can optimize LEFT JOIN */
if (field->field->table == join_tab->table &&
field->val->type() == Item::NULL_ITEM &&
!field->field->real_maybe_null())
join_tab->table->reginfo.not_exists_optimize=1;
}
} }
if (thd->lex.select->ftfunc_list.elements) if (thd->lex.select->ftfunc_list.elements)
......
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