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Some simple optimisation

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= ANY and <> ALL converted to (NOT) IN to get advantage of IN optimisation


mysql-test/r/subselect.result:
  test of new optimisation
mysql-test/t/subselect.test:
  test of new optimisation
sql/mysql_priv.h:
  new function for subquery creation
sql/sql_parse.cc:
  layout fix
  new function for subquery creation (convert some ALL/ANY to IN)
sql/sql_yacc.yy:
  same code blocks replaced with function
This commit is contained in:
unknown
2003-10-08 17:40:54 +03:00
parent 0f81ecf501
commit 1db2b4e60e
5 changed files with 69 additions and 18 deletions
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5
sql/mysql_priv.h
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@ -1015,6 +1015,11 @@ compare_func_creator comp_le_creator(bool invert);
compare_func_creator comp_lt_creator(bool invert);
compare_func_creator comp_ne_creator(bool invert);
Item * all_any_subquery_creator(Item *left_expr,
chooser_compare_func_creator cmp,
bool all,
SELECT_LEX *select_lex);
/*
clean/setup table fields and map