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Fix for bug#14861 aliased column names are not preserved.

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Create tmp table filed using original item name when it's necessary
This commit is contained in:
gluh@eagle.intranet.mysql.r18.ru
2005-12-19 15:36:03 +04:00
parent c8631b414b
commit f4b052844f
3 changed files with 42 additions and 5 deletions
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16
mysql-test/r/view.result
View File

@ -2456,3 +2456,19 @@ f1()
42
drop view v2,v1;
drop function f1;
create table t1 (id numeric, warehouse_id numeric);
create view v1 as select id from t1;
create view v2 as
select t1.warehouse_id, v1.id as receipt_id
from t1, v1 where t1.id = v1.id;
insert into t1 (id, warehouse_id) values(3, 2);
insert into t1 (id, warehouse_id) values(4, 2);
insert into t1 (id, warehouse_id) values(5, 1);
select v2.receipt_id as alias1, v2.receipt_id as alias2 from v2
order by v2.receipt_id;
alias1 alias2
3 3
4 4
5 5
drop view v2, v1;
drop table t1;

19
mysql-test/t/view.test
View File

@ -2319,3 +2319,22 @@ CREATE VIEW v2 AS SELECT f1();
select * from v2;
drop view v2,v1;
drop function f1;
#
# Bug#14861: aliased column names are not preserved.
#
create table t1 (id numeric, warehouse_id numeric);
create view v1 as select id from t1;
create view v2 as
select t1.warehouse_id, v1.id as receipt_id
from t1, v1 where t1.id = v1.id;
insert into t1 (id, warehouse_id) values(3, 2);
insert into t1 (id, warehouse_id) values(4, 2);
insert into t1 (id, warehouse_id) values(5, 1);
select v2.receipt_id as alias1, v2.receipt_id as alias2 from v2
order by v2.receipt_id;
drop view v2, v1;
drop table t1;

12
sql/sql_select.cc
View File

@ -8189,7 +8189,7 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
uint convert_blob_length)
{
Item::Type orig_type= type;
Item *orig_item;
Item *orig_item= 0;
if (type != Item::FIELD_ITEM &&
item->real_item()->type() == Item::FIELD_ITEM &&
@ -8240,10 +8240,12 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
}
else
result= create_tmp_field_from_field(thd, (*from_field= field->field),
item->name, table,
modify_item ? field :
NULL,
convert_blob_length);
orig_item ? orig_item->name :
item->name,
table,
modify_item ? field :
NULL,
convert_blob_length);
if (orig_type == Item::REF_ITEM && orig_modify)
((Item_ref*)orig_item)->set_result_field(result);
return result;