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

Browse source 
into rurik.mysql.com:/home/igor/mysql-5.0
This commit is contained in:
igor@rurik.mysql.com 2005-06-21 10:15:22 -07:00
commit a626ab4c96
3 changed files with 27 additions and 47 deletions
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31
mysql-test/r/group_by.result
View file

@ -723,27 +723,6 @@ WHERE hostname LIKE '%aol%'
hostname no
cache-dtc-af05.proxy.aol.com 1
DROP TABLE t1;
create table t1 (c1 char(3), c2 char(3));
create table t2 (c3 char(3), c4 char(3));
insert into t1 values ('aaa', 'bb1'), ('aaa', 'bb2');
insert into t2 values ('aaa', 'bb1'), ('aaa', 'bb2');
select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
group by c2;
c2
aaa
aaa
Warnings:
Warning 1052 Column 'c2' in group statement is ambiguous
show warnings;
Level Code Message
Warning 1052 Column 'c2' in group statement is ambiguous
select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
group by t1.c1;
c2
aaa
show warnings;
Level Code Message
drop table t1, t2;
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (1,2), (1,3);
SELECT a, b FROM t1 GROUP BY 'const';
@ -762,3 +741,13 @@ SELECT dt DIV 1 AS f, id FROM t1 GROUP BY f;
f id
20050501123000 1
DROP TABLE t1;
CREATE TABLE t1 (id varchar(20) NOT NULL);
INSERT INTO t1 VALUES ('trans1'), ('trans2');
CREATE TABLE t2 (id varchar(20) NOT NULL, err_comment blob NOT NULL);
INSERT INTO t2 VALUES ('trans1', 'a problem');
SELECT COUNT(DISTINCT(t1.id)), LEFT(err_comment, 256) AS comment
FROM t1 LEFT JOIN t2 ON t1.id=t2.id GROUP BY comment;
COUNT(DISTINCT(t1.id)) comment
1 NULL
1 a problem
DROP TABLE t1, t2;

39
mysql-test/t/group_by.test
View file

@ -542,30 +542,6 @@ SELECT hostname, COUNT(DISTINCT user_id) as no FROM t1
DROP TABLE t1;
#
# Bug#11211: Ambiguous column reference in GROUP BY.
#
create table t1 (c1 char(3), c2 char(3));
create table t2 (c3 char(3), c4 char(3));
insert into t1 values ('aaa', 'bb1'), ('aaa', 'bb2');
insert into t2 values ('aaa', 'bb1'), ('aaa', 'bb2');
# query with ambiguous column reference 'c2'
--disable_ps_protocol
select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
group by c2;
show warnings;
--enable_ps_protocol
# this query has no ambiguity
select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
group by t1.c1;
show warnings;
drop table t1, t2;
#
# Test for bug #8614: GROUP BY 'const' with DISTINCT
#
@ -589,3 +565,18 @@ INSERT INTO t1 VALUES ( 1, '2005-05-01 12:30:00' );
SELECT dt DIV 1 AS f, id FROM t1 GROUP BY f;
DROP TABLE t1;
#
# Test for bug #11295: GROUP BY a BLOB column with COUNT(DISTINCT column1)
# when the BLOB column takes NULL values
#
CREATE TABLE t1 (id varchar(20) NOT NULL);
INSERT INTO t1 VALUES ('trans1'), ('trans2');
CREATE TABLE t2 (id varchar(20) NOT NULL, err_comment blob NOT NULL);
INSERT INTO t2 VALUES ('trans1', 'a problem');
SELECT COUNT(DISTINCT(t1.id)), LEFT(err_comment, 256) AS comment
FROM t1 LEFT JOIN t2 ON t1.id=t2.id GROUP BY comment;
DROP TABLE t1, t2;

4
sql/item_buff.cc
View file

@ -60,8 +60,8 @@ bool Cached_item_str::cmp(void)
String *res;
bool tmp;
res=item->val_str(&tmp_value);
res->length(min(res->length(), value.alloced_length()));
if ((res=item->val_str(&tmp_value)))
res->length(min(res->length(), value.alloced_length()));
if (null_value != item->null_value)
{
if ((null_value= item->null_value))