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Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

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into  rakia.(none):/home/kgeorge/mysql/autopush/B20792-5.0-opt


sql/sql_select.cc:
  Auto merged
This commit is contained in:
unknown
2006-07-27 10:05:03 +03:00
parent c7c8c33c5b f15c568657
commit d81d6e7430
4 changed files with 8 additions and 8 deletions
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2
sql/item.h
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@ -752,7 +752,7 @@ public:
virtual bool find_item_in_field_list_processor(byte *arg) { return 0; } virtual bool find_item_in_field_list_processor(byte *arg) { return 0; }
virtual bool change_context_processor(byte *context) { return 0; } virtual bool change_context_processor(byte *context) { return 0; }
virtual bool reset_query_id_processor(byte *query_id) { return 0; } virtual bool reset_query_id_processor(byte *query_id) { return 0; }
virtual bool func_type_checker_processor(byte *arg) { return 0; } virtual bool is_expensive_processor(byte *arg) { return 0; }
virtual Item *equal_fields_propagator(byte * arg) { return this; } virtual Item *equal_fields_propagator(byte * arg) { return this; }
virtual Item *set_no_const_sub(byte *arg) { return this; } virtual Item *set_no_const_sub(byte *arg) { return this; }

4
sql/item_func.cc
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@ -399,9 +399,9 @@ Field *Item_func::tmp_table_field(TABLE *t_arg)
} }
bool Item_func::func_type_checker_processor(byte *arg) bool Item_func::is_expensive_processor(byte *arg)
{ {
return *((Functype*)arg) == functype(); return is_expensive();
} }

5
sql/item_func.h
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@ -189,7 +189,8 @@ public:
Item *transform(Item_transformer transformer, byte *arg); Item *transform(Item_transformer transformer, byte *arg);
void traverse_cond(Cond_traverser traverser, void traverse_cond(Cond_traverser traverser,
void * arg, traverse_order order); void * arg, traverse_order order);
bool func_type_checker_processor(byte *arg); bool is_expensive_processor(byte *arg);
virtual bool is_expensive() { return 0; }
}; };
@ -947,6 +948,7 @@ public:
void cleanup(); void cleanup();
Item_result result_type () const { return udf.result_type(); } Item_result result_type () const { return udf.result_type(); }
table_map not_null_tables() const { return 0; } table_map not_null_tables() const { return 0; }
bool is_expensive() { return 1; }
}; };
@ -1475,6 +1477,7 @@ public:
virtual enum Functype functype() const { return FUNC_SP; } virtual enum Functype functype() const { return FUNC_SP; }
bool fix_fields(THD *thd, Item **ref); bool fix_fields(THD *thd, Item **ref);
bool is_expensive() { return 1; }
}; };

5
sql/sql_select.cc
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@ -1073,10 +1073,7 @@ JOIN::optimize()
for (ORDER *tmp_order= order; tmp_order ; tmp_order=tmp_order->next) for (ORDER *tmp_order= order; tmp_order ; tmp_order=tmp_order->next)
{ {
Item *item= *tmp_order->item; Item *item= *tmp_order->item;
Item_func::Functype type=Item_func::FUNC_SP; if (item->walk(&Item::is_expensive_processor,(byte*)0))
Item_func::Functype type1=Item_func::UDF_FUNC;
if (item->walk(&Item::func_type_checker_processor,(byte*)&type) ||
item->walk(&Item::func_type_checker_processor,(byte*)&type1))
{ {
/* Force tmp table without sort */ /* Force tmp table without sort */
need_tmp=1; simple_order=simple_group=0; need_tmp=1; simple_order=simple_group=0;