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Fix bug#11709 View was ordered by wrong column.

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When searching column to sort on, item was compared to field under view
column, but not the column itself. Because names of view column and underlaid
field may differ, it leads to possibly choosing wrong column for sorting on.

This patch makes Item_direct_view_ref::eq(Item *item,...) compare
item's name with it's own name proir to comparing to *ref item.


sql/item.cc:
  Fix bug #11709 View was ordered by wrong column
sql/item.h:
  Fix bug #11709 View was ordered by wrong column
mysql-test/t/view.test:
  Test case for bug #11709 View was ordered by wrong column.
mysql-test/r/view.result:
  Test case for bug #11709 View was ordered by wrong column.
This commit is contained in:
unknown
2005-07-12 23:22:08 +04:00
parent 995abb0ed2
commit a578be339d
4 changed files with 48 additions and 0 deletions
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9
mysql-test/r/view.result
View File

@ -1940,3 +1940,12 @@ s1 s2
DROP PROCEDURE p1;
DROP VIEW v1;
DROP TABLE t1;
create table t1 (f1 int, f2 int);
create view v1 as select f1 as f3, f2 as f1 from t1;
insert into t1 values (1,3),(2,1),(3,2);
select * from v1 order by f1;
f3 f1
2 1
3 2
1 3
drop table t1;

9
mysql-test/t/view.test
View File

@ -1778,3 +1778,12 @@ CALL p1();
DROP PROCEDURE p1;
DROP VIEW v1;
DROP TABLE t1;
#
# Test for bug #11709 View was ordered by wrong column
#
create table t1 (f1 int, f2 int);
create view v1 as select f1 as f3, f2 as f1 from t1;
insert into t1 values (1,3),(2,1),(3,2);
select * from v1 order by f1;
drop table t1;