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Moving max/min optimization from prepare to optimization phase. MWL#148

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mysql-test/r/explain.result:
  fixed results (new item)
mysql-test/r/subselect.result:
  fixed results (new item)
mysql-test/r/subselect_no_mat.result:
  fixed results (new item)
mysql-test/r/subselect_no_opts.result:
  fixed results (new item)
mysql-test/r/subselect_no_semijoin.result:
  Fixed results (new item)
mysql-test/suite/pbxt/r/subselect.result:
  Fixed results (new item)
mysql-test/t/explain.test:
  Fixed results (correct behaviour)
sql/item_cmpfunc.cc:
  Pass through  for max/min
sql/item_subselect.cc:
  moving max/min
sql/item_subselect.h:
  moving max/min
sql/mysql_priv.h:
  new uncacheble flags added
sql/opt_subselect.cc:
  maxmin moved.
sql/opt_subselect.h:
  New function for maxmin.
sql/sql_class.h:
  debug code
sql/sql_lex.cc:
  Fixed flags.
  Limit setting fixed.
sql/sql_lex.h:
  2 new flags.
sql/sql_select.cc:
  Prepare divided on 2 function to be able recollect some info after transformation.
sql/sql_select.h:
  Prepare divided on 2 functions.
This commit is contained in:
Oleksandr Byelkin
2011-05-04 18:08:58 +03:00
parent 0278b06e6b
commit 7b797fe66d
18 changed files with 415 additions and 236 deletions
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7
sql/sql_class.h
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@@ -2727,7 +2727,12 @@ public:
class select_result_interceptor: public select_result
{
public:
select_result_interceptor() {} /* Remove gcc warning */
select_result_interceptor()
{
DBUG_ENTER("select_result_interceptor::select_result_interceptor");
DBUG_PRINT("enter", ("this 0x%lx", (ulong) this));
DBUG_VOID_RETURN;
} /* Remove gcc warning */
uint field_count(List<Item> &fields) const { return 0; }
bool send_fields(List<Item> &fields, uint flag) { return FALSE; }
};