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Commit 1c3f8cc2 authored by unknown's avatar unknown
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sql_select.cc: 

  Fixed bug #11412.
  Reversed the patch of cs 1.1934 for the function 
  create_tmp_table. Modified the function to support
  tem_ref objects created for view fields.
item_buff.cc:
  Fixed bug #11412.
  Modified implementation of new_Cached_item to support
  cacheing of view fields.
item.h:
  Fixed bug #11412.
  Changed implementation of Item_ref::get_tmp_table_field and
  added Item_ref::get_tmp_table_item to support Item_ref objects
  created for view fields.
view.test, view.result:
  Added a test case for bug #11412.


mysql-test/r/view.result:
  Added a test case for bug #11412.
mysql-test/t/view.test:
  Added a test case for bug #11412.
sql/item.h:
  Fixed bug #11412.
  Changed implementation of Item_ref::get_tmp_table_field and
  added Item_ref::get_tmp_table_item to support Item_ref objects
  created for view fields.
sql/item_buff.cc:
  Fixed bug #11412.
  Modified implementation of new_Cached_item to support
  cacheing of view fields.
sql/sql_select.cc:
  Fixed bug #11412.
  Reversed the patch of cs 1.1934 for the function 
  create_tmp_table. Modified the function to support
  tem_ref objects created for view fields.
parent 9a0d9c35
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Showing with 79 additions and 30 deletions
mysql-test/r/view.result
View file @ 1c3f8cc2
......@@ -2024,3 +2024,26 @@ f1 sb
2005-01-01 12:00:00 2005-01-01 10:58:59
drop view v1;
drop table t1;
CREATE TABLE t1 (
aid int PRIMARY KEY,
fn varchar(20) NOT NULL,
ln varchar(20) NOT NULL
);
CREATE TABLE t2 (
aid int NOT NULL,
pid int NOT NULL
);
INSERT INTO t1 VALUES(1,'a','b'), (2,'c','d');
INSERT INTO t2 values (1,1), (2,1), (2,2);
CREATE VIEW v1 AS SELECT t1.*,t2.pid FROM t1,t2 WHERE t1.aid = t2.aid;
SELECT pid,GROUP_CONCAT(CONCAT(fn,' ',ln) ORDER BY 1) FROM t1,t2
WHERE t1.aid = t2.aid GROUP BY pid;
pid GROUP_CONCAT(CONCAT(fn,' ',ln) ORDER BY 1)
1 a b,c d
2 c d
SELECT pid,GROUP_CONCAT(CONCAT(fn,' ',ln) ORDER BY 1) FROM v1 GROUP BY pid;
pid GROUP_CONCAT(CONCAT(fn,' ',ln) ORDER BY 1)
1 a b,c d
2 c d
DROP VIEW v1;
DROP TABLE t1,t2;
mysql-test/t/view.test
View file @ 1c3f8cc2
......@@ -1862,4 +1862,28 @@ insert into t1 values('2005.01.01 12:0:0');
create view v1 as select f1, subtime(f1, '1:1:1') as sb from t1;
select * from v1;
drop view v1;
drop table t1;
drop table t1;
#
# Test for bug #11412: query over a multitable view with GROUP_CONCAT
#
CREATE TABLE t1 (
aid int PRIMARY KEY,
fn varchar(20) NOT NULL,
ln varchar(20) NOT NULL
);
CREATE TABLE t2 (
aid int NOT NULL,
pid int NOT NULL
);
INSERT INTO t1 VALUES(1,'a','b'), (2,'c','d');
INSERT INTO t2 values (1,1), (2,1), (2,2);
CREATE VIEW v1 AS SELECT t1.*,t2.pid FROM t1,t2 WHERE t1.aid = t2.aid;
SELECT pid,GROUP_CONCAT(CONCAT(fn,' ',ln) ORDER BY 1) FROM t1,t2
WHERE t1.aid = t2.aid GROUP BY pid;
SELECT pid,GROUP_CONCAT(CONCAT(fn,' ',ln) ORDER BY 1) FROM v1 GROUP BY pid;
DROP VIEW v1;
DROP TABLE t1,t2;
sql/item.h
View file @ 1c3f8cc2
......@@ -1464,7 +1464,10 @@ public:
void save_org_in_field(Field *field) { (*ref)->save_org_in_field(field); }
enum Item_result result_type () const { return (*ref)->result_type(); }
enum_field_types field_type() const { return (*ref)->field_type(); }
Field *get_tmp_table_field() { return result_field; }
Field *get_tmp_table_field()
{ return result_field ? result_field : (*ref)->get_tmp_table_field(); }
Item *get_tmp_table_item(THD *thd)
{ return (*ref)->get_tmp_table_item(thd); }
table_map used_tables() const
{
return depended_from ? OUTER_REF_TABLE_BIT : (*ref)->used_tables();
......@@ -1702,7 +1705,7 @@ class Cached_item_field :public Cached_item
public:
Cached_item_field(Item_field *item)
{
field=item->field;
field= item->field;
buff= (char*) sql_calloc(length=field->pack_length());
}
bool cmp(void);
......
sql/item_buff.cc
View file @ 1c3f8cc2
......@@ -25,9 +25,9 @@
Cached_item *new_Cached_item(THD *thd, Item *item)
{
if (item->type() == Item::FIELD_ITEM &&
!(((Item_field *) item)->field->flags & BLOB_FLAG))
return new Cached_item_field((Item_field *) item);
if (item->real_item()->type() == Item::FIELD_ITEM &&
!(((Item_field *) (item->real_item()))->field->flags & BLOB_FLAG))
return new Cached_item_field((Item_field *) (item->real_item()));
switch (item->result_type()) {
case STRING_RESULT:
return new Cached_item_str(thd, (Item_field *) item);
......
sql/sql_select.cc
View file @ 1c3f8cc2
......@@ -8026,6 +8026,12 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
bool table_cant_handle_bit_fields,
uint convert_blob_length)
{
Item *org_item= item;
if (item->real_item()->type() == Item::FIELD_ITEM)
{
item= item->real_item();
type= item->type();
}
switch (type) {
case Item::SUM_FUNC_ITEM:
{
......@@ -8038,30 +8044,22 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
case Item::FIELD_ITEM:
case Item::DEFAULT_VALUE_ITEM:
{
Item_field *field= (Item_field*) item;
if (table_cant_handle_bit_fields && field->field->type() == FIELD_TYPE_BIT)
return create_tmp_field_from_item(thd, item, table, copy_func,
modify_item, convert_blob_length);
return create_tmp_field_from_field(thd, (*from_field= field->field),
item->name, table,
modify_item ? (Item_field*) item : NULL,
convert_blob_length);
}
case Item::REF_ITEM:
{
Item *tmp_item;
if ((tmp_item= item->real_item())->type() == Item::FIELD_ITEM)
if (org_item->type() != Item::REF_ITEM ||
!((Item_ref *)org_item)->depended_from)
{
Item_field *field= (Item_field*) tmp_item;
Field *new_field= create_tmp_field_from_field(thd,
(*from_field= field->field),
item->name, table,
NULL,
convert_blob_length);
if (modify_item)
item->set_result_field(new_field);
return new_field;
Item_field *field= (Item_field*) item;
if (table_cant_handle_bit_fields &&
field->field->type() == FIELD_TYPE_BIT)
return create_tmp_field_from_item(thd, item, table, copy_func,
modify_item, convert_blob_length);
return create_tmp_field_from_field(thd, (*from_field= field->field),
item->name, table,
modify_item ? (Item_field*) item :
NULL,
convert_blob_length);
}
else
item= org_item;
}
case Item::FUNC_ITEM:
case Item::COND_ITEM:
......@@ -8074,6 +8072,7 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
case Item::REAL_ITEM:
case Item::DECIMAL_ITEM:
case Item::STRING_ITEM:
case Item::REF_ITEM:
case Item::NULL_ITEM:
case Item::VARBIN_ITEM:
return create_tmp_field_from_item(thd, item, table, copy_func, modify_item,
......@@ -10904,12 +10903,12 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
usable_keys.set_all();
for (ORDER *tmp_order=order; tmp_order ; tmp_order=tmp_order->next)
{
if ((*tmp_order->item)->type() != Item::FIELD_ITEM)
if ((*tmp_order->item)->real_item()->type() != Item::FIELD_ITEM)
{
usable_keys.clear_all();
DBUG_RETURN(0);
}
usable_keys.intersect(((Item_field*) (*tmp_order->item))->
usable_keys.intersect(((Item_field*) (*tmp_order->item)->real_item())->
field->part_of_sortkey);
if (usable_keys.is_clear_all())
DBUG_RETURN(0); // No usable keys
......
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