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MWL#17: Table elimination

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- Continue addressing review feedback: remove "unusable KEYUSEs" 
  extension as it is no longer needed.

sql/item.h:
  MWL#17: Table elimination
  - Code cleanup
sql/opt_table_elimination.cc:
  MWL#17: Table elimination
  - Code cleanup
This commit is contained in:
Sergey Petrunya
2009-08-13 03:43:02 +04:00
parent 854bb82bd8
commit b032c7d833
4 changed files with 21 additions and 139 deletions
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33
sql/opt_table_elimination.cc
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@@ -1119,7 +1119,6 @@ void eliminate_tables(JOIN *join)
case Func_dep::FD_OUTER_JOIN:
{
Outer_join_dep *outer_join_dep= (Outer_join_dep*)bound_dep;
/* TODO what do here? Stop if eliminated the top-level? */
mark_as_eliminated(te.join, outer_join_dep->table_list);
Outer_join_dep *parent= outer_join_dep->parent;
if (parent &&
@@ -1236,38 +1235,6 @@ void dbug_print_deps(Table_elimination *te)
#endif
/***********************************************************************************************/
#if 0
static void dbug_print_fdep(FUNC_DEP *fd)
{
switch (fd->type) {
case FUNC_DEP::FD_OUTER_JOIN:
{
fprintf(DBUG_FILE, "outer_join(");
if (fd->table_list->nested_join)
{
bool first= TRUE;
List_iterator<TABLE_LIST> it(fd->table_list->nested_join->join_list);
TABLE_LIST *tbl;
while ((tbl= it++))
{
fprintf(DBUG_FILE, "%s%s", first?"":" ",
tbl->table? tbl->table->alias : "...");
first= FALSE;
}
fprintf(DBUG_FILE, ")");
}
else
fprintf(DBUG_FILE, "%s", fd->table_list->table->alias);
fprintf(DBUG_FILE, ")");
break;
}
}
}
#endif
/**
@} (end of group Table_Elimination)
*/