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MWL#17: Table elimination

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- Add more testcases.
- Fix trivial compile failure
- Remove handling of "column IN (one_element)". This is converted to equality 
  elsewhere

mysql-test/r/table_elim.result:
  MWL#17: Table elimination
  - Add more testcases.
  - Fix trivial compile failure
mysql-test/t/table_elim.test:
  MWL#17: Table elimination
  - Add more testcases
sql/mysqld.cc:
  MWL#17: Table elimination
  - Fix trivial compile failure
sql/opt_table_elimination.cc:
  MWL#17: Table elimination
  - Add more testcases.
  - Remove handling of "column IN (one_element)".This is converted to equality 
    elsewhere
This commit is contained in:
Sergey Petrunya 2009-08-25 12:27:50 +03:00
commit 9400700b99
4 changed files with 70 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

13
sql/opt_table_elimination.cc
View file

@ -467,15 +467,6 @@ void build_eq_mods_for_cond(Func_dep_analyzer *fda, Equality_module **eq_mod,
Item **args= cond_func->arguments();
switch (cond_func->functype()) {
case Item_func::IN_FUNC:
{
if (cond_func->argument_count() == 2)
{
add_eq_mod(fda, eq_mod, *and_level, cond_func, args[0], args[1]);
add_eq_mod(fda, eq_mod, *and_level, cond_func, args[1], args[0]);
}
break;
}
case Item_func::BETWEEN:
{
Item *fld;
@ -837,7 +828,7 @@ static Table_value *get_table_value(Func_dep_analyzer *fda, TABLE *table)
{
Table_value *tbl_dep;
if (!(tbl_dep= new Table_value(table)))
return NULL;
return NULL; /* purecov: inspected */
Key_module **key_list= &(tbl_dep->keys);
/* Add dependencies for unique keys */
@ -1499,6 +1490,7 @@ static void mark_as_eliminated(JOIN *join, TABLE_LIST *tbl)
#ifndef DBUG_OFF
/* purecov: begin inspected */
static
void dbug_print_deps(Func_dep_analyzer *fda)
{
@ -1559,6 +1551,7 @@ void dbug_print_deps(Func_dep_analyzer *fda)
DBUG_UNLOCK_FILE;
DBUG_VOID_RETURN;
}
/* purecov: end */
#endif
/**