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added depended subselect processing

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mysql-test/r/subselect.result:
  depended subselect test
mysql-test/t/subselect.test:
  depended subselect test
sql/item.cc:
  resolving field names in depended queries
sql/item_subselect.cc:
  move optimization just before execution, because we can't optimize inner depended subselect if have not optimized outer subselect
sql/item_subselect.h:
  move optimization just before execution
sql/sql_lex.h:
  some inline methods to hide internal SELECT_LEX structures
sql/sql_select.cc:
  fixed error
This commit is contained in:
unknown
2002-05-26 22:50:32 +03:00
parent 3a6483fe4b
commit 02d8b9ba56
9 changed files with 109 additions and 17 deletions
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3
sql/sql_select.h
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@ -196,6 +196,8 @@ class JOIN :public Sql_alloc{
my_bool test_function_query; // need to return select items 1 row
const char *zero_result_cause; // not 0 if exec must return zero result
my_bool union_part; // this subselect is part of union
JOIN(THD *thd, List<Item> &fields,
ulong select_options, select_result *result):
@ -236,6 +238,7 @@ class JOIN :public Sql_alloc{
ORDER *proc_param, SELECT_LEX *select, SELECT_LEX_UNIT *unit);
int optimize();
int global_optimize();
int reinit();
void exec();
int cleanup(THD *thd);
};