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sql_select.cc:

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Added missing comment for fix of #10561.
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igor@rurik.mysql.com
2005-05-21 08:39:35 -07:00
parent e4006f2fed
commit 01fcf04d95
1 changed files with 5 additions and 0 deletions
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5
sql/sql_select.cc
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@ -2825,6 +2825,11 @@ add_key_fields(KEY_FIELD **key_fields,uint *and_level,
if (cond_func->functype() == Item_func::NOT_FUNC)
{
Item *item= cond_func->arguments()[0];
/*
At this moment all NOT before simple comparison predicates
are eliminated. NOT IN and NOT BETWEEN are treated similar
IN and BETWEEN respectively.
*/
if (item->type() == Item::FUNC_ITEM &&
((Item_func *) item)->select_optimize() == Item_func::OPTIMIZE_KEY)
{