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Merge mysql.com:/d2/hf/mrg/mysql-5.0-opt

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into  mysql.com:/d2/hf/mrg/mysql-5.1-opt
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holyfoot/hf@hfmain.(none)
2007-05-18 20:00:49 +05:00
parent d12e6f7b0b 835189cb85
commit 85d5dfedf6
18 changed files with 701 additions and 22 deletions
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6
sql/sql_select.cc
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@ -988,6 +988,12 @@ JOIN::optimize()
}
}
if (conds &&!outer_join && const_table_map != found_const_table_map &&
(select_options & SELECT_DESCRIBE) &&
select_lex->master_unit() == &thd->lex->unit) // upper level SELECT
{
conds=new Item_int((longlong) 0,1); // Always false
}
if (make_join_select(this, select, conds))
{
zero_result_cause=