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Kirill Smelkov
mariadb
Commits
0b2f4c56
Commit
0b2f4c56
authored
Mar 23, 2009
by
Matthias Leich
Browse files
Options
Browse Files
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Plain Diff
Merge 5.0 -> 5.1 of fix for the bugs 43015 and 43065
parents
596a9dbd
5eb0b481
Changes
6
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6 changed files
with
399 additions
and
355 deletions
+399
-355
mysql-test/r/lock_multi.result
mysql-test/r/lock_multi.result
+0
-34
mysql-test/r/lock_multi_bug38499.result
mysql-test/r/lock_multi_bug38499.result
+19
-0
mysql-test/r/lock_multi_bug38691.result
mysql-test/r/lock_multi_bug38691.result
+17
-0
mysql-test/t/lock_multi.test
mysql-test/t/lock_multi.test
+1
-321
mysql-test/t/lock_multi_bug38499.test
mysql-test/t/lock_multi_bug38499.test
+221
-0
mysql-test/t/lock_multi_bug38691.test
mysql-test/t/lock_multi_bug38691.test
+141
-0
No files found.
mysql-test/r/lock_multi.result
View file @
0b2f4c56
...
...
@@ -96,40 +96,6 @@ alter table t1 auto_increment=0;
alter table t1 auto_increment=0;
unlock tables;
drop table t1;
CREATE TABLE t1 (
a int(11) unsigned default NULL,
b varchar(255) default NULL,
UNIQUE KEY a (a),
KEY b (b)
);
INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3);
CREATE TABLE t2 SELECT * FROM t1;
CREATE TABLE t3 SELECT * FROM t1;
# test altering of columns that multiupdate doesn't use
# normal mode
# PS mode
# test altering of columns that multiupdate uses
# normal mode
# PS mode
DROP TABLE t1, t2, t3;
CREATE TABLE t1( a INT, b INT );
INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4);
# 1. test regular tables
# 1.1. test altering of columns that multiupdate doesn't use
# 1.1.1. normal mode
# 1.1.2. PS mode
# 1.2. test altering of columns that multiupdate uses
# 1.2.1. normal mode
# 1.2.2. PS mode
ALTER TABLE t1 ADD COLUMN a INT;
# 2. test UNIONs
# 2.1. test altering of columns that multiupdate doesn't use
# 2.1.1. normal mode
# 2.1.2. PS mode
# 2.2. test altering of columns that multiupdate uses
# 2.2.1. normal mode
# 2.2.2. PS mode
DROP TABLE t1;
End of 5.0 tests
create table t1 (i int);
lock table t1 read;
...
...
mysql-test/r/lock_multi_bug38499.result
0 → 100644
View file @
0b2f4c56
DROP TABLE IF EXISTS t1;
CREATE TABLE t1( a INT, b INT );
INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3), (4, 4);
# 1. test regular tables
# 1.1. test altering of columns that multiupdate doesn't use
# 1.1.1. normal mode
# 1.1.2. PS mode
# 1.2. test altering of columns that multiupdate uses
# 1.2.1. normal mode
# 1.2.2. PS mode
ALTER TABLE t1 ADD COLUMN a INT;
# 2. test UNIONs
# 2.1. test altering of columns that multiupdate doesn't use
# 2.1.1. normal mode
# 2.1.2. PS mode
# 2.2. test altering of columns that multiupdate uses
# 2.2.1. normal mode
# 2.2.2. PS mode
DROP TABLE t1;
mysql-test/r/lock_multi_bug38691.result
0 → 100644
View file @
0b2f4c56
DROP TABLE IF EXISTS t1,t2,t3;
CREATE TABLE t1 (
a int(11) unsigned default NULL,
b varchar(255) default NULL,
UNIQUE KEY a (a),
KEY b (b)
);
INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3);
CREATE TABLE t2 SELECT * FROM t1;
CREATE TABLE t3 SELECT * FROM t1;
# test altering of columns that multiupdate doesn't use
# normal mode
# PS mode
# test altering of columns that multiupdate uses
# normal mode
# PS mode
DROP TABLE t1, t2, t3;
mysql-test/t/lock_multi.test
View file @
0b2f4c56
...
...
@@ -262,6 +262,7 @@ DROP DATABASE mysqltest_1;
# With bug in place: try to acquire LOCK_mysql_create_table...
# When fixed: Reject dropping db because of the read lock.
connection
con1
;
# Wait a bit so that the session con2 is in state "Waiting for release of readlock"
let
$wait_condition
=
select
count
(
*
)
=
1
from
information_schema
.
processlist
where
state
=
"Waiting for release of readlock"
...
...
@@ -316,327 +317,6 @@ reap;
connection
locker
;
drop
table
t1
;
#
# Bug#38691 segfault/abort in ``UPDATE ...JOIN'' while
# ``FLUSH TABLES WITH READ LOCK''
#
--
connection
default
CREATE
TABLE
t1
(
a
int
(
11
)
unsigned
default
NULL
,
b
varchar
(
255
)
default
NULL
,
UNIQUE
KEY
a
(
a
),
KEY
b
(
b
)
);
INSERT
INTO
t1
VALUES
(
1
,
1
),
(
2
,
2
),
(
3
,
3
);
CREATE
TABLE
t2
SELECT
*
FROM
t1
;
CREATE
TABLE
t3
SELECT
*
FROM
t1
;
--
echo
# test altering of columns that multiupdate doesn't use
--
echo
# normal mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
send
UPDATE
t2
INNER
JOIN
(
t1
JOIN
t3
USING
(
a
))
USING
(
a
)
SET
a
=
NULL
WHERE
t1
.
b
<>
t2
.
b
;
--
connection
locker
ALTER
TABLE
t2
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t2
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
echo
# PS mode
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a)
SET a = NULL WHERE t1.b <> t2.b'
;
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
--
send
EXECUTE
stmt
--
connection
locker
ALTER
TABLE
t2
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t2
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
enable_query_log
--
echo
# test altering of columns that multiupdate uses
--
echo
# normal mode
--
connection
default
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t2
ADD
COLUMN
a
int
(
11
)
unsigned
default
NULL
;
UPDATE
t2
SET
a
=
b
;
--
connection
writer
--
send
UPDATE
t2
INNER
JOIN
(
t1
JOIN
t3
USING
(
a
))
USING
(
a
)
SET
a
=
NULL
WHERE
t1
.
b
<>
t2
.
b
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t2
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
--
reap
}
--
enable_query_log
--
echo
# PS mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t2
ADD
COLUMN
a
int
(
11
)
unsigned
default
NULL
;
UPDATE
t2
SET
a
=
b
;
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a) SET a = NULL WHERE t1.b <> t2.b'
;
--
send
EXECUTE
stmt
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t2
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
--
reap
}
--
enable_query_log
--
connection
default
DROP
TABLE
t1
,
t2
,
t3
;
#
# Bug#38499 flush tables and multitable table update with derived table cause
# crash
#
CREATE
TABLE
t1
(
a
INT
,
b
INT
);
INSERT
INTO
t1
VALUES
(
1
,
1
),
(
2
,
2
),
(
3
,
3
),
(
4
,
4
);
--
echo
# 1. test regular tables
--
echo
# 1.1. test altering of columns that multiupdate doesn't use
--
echo
# 1.1.1. normal mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
send
UPDATE
t1
,
(
SELECT
1
FROM
t1
t1i
)
d
SET
a
=
0
WHERE
1
=
0
;
--
connection
locker
ALTER
TABLE
t1
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t1
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
echo
# 1.1.2. PS mode
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t1, (SELECT 1 FROM t1 t1i) d SET a = 0 WHERE 1=0'
;
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
--
send
EXECUTE
stmt
--
connection
locker
ALTER
TABLE
t1
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t1
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
enable_query_log
--
echo
# 1.2. test altering of columns that multiupdate uses
--
echo
# 1.2.1. normal mode
--
connection
default
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t1
ADD
COLUMN
a
int
(
11
)
unsigned
default
NULL
;
UPDATE
t1
SET
a
=
b
;
--
connection
writer
--
send
UPDATE
t1
,
(
SELECT
1
FROM
t1
t1i
)
d
SET
a
=
0
WHERE
1
=
0
;
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t1
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
# unknown column error
--
reap
}
--
enable_query_log
--
echo
# 1.2.2. PS mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t1
ADD
COLUMN
a
INT
;
UPDATE
t1
SET
a
=
b
;
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t1, (SELECT 1 FROM t1 t1i) d SET a = 0 WHERE 1=0'
;
--
send
EXECUTE
stmt
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t1
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
# Unknown column 'a' in 'field list'
--
reap
}
--
enable_query_log
--
connection
default
ALTER
TABLE
t1
ADD
COLUMN
a
INT
;
--
echo
# 2. test UNIONs
--
echo
# 2.1. test altering of columns that multiupdate doesn't use
--
echo
# 2.1.1. normal mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
send
UPDATE
t1
,
((
SELECT
1
FROM
t1
t1i
)
UNION
(
SELECT
2
FROM
t1
t1ii
))
e
SET
a
=
0
WHERE
1
=
0
;
--
connection
locker
ALTER
TABLE
t1
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t1
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
echo
# 2.1.2. PS mode
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t1, ((SELECT 1 FROM t1 t1i) UNION (SELECT 2 FROM t1 t1ii)) e SET a = 0 WHERE 1=0'
;
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
--
send
EXECUTE
stmt
--
connection
locker
ALTER
TABLE
t1
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t1
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
enable_query_log
--
echo
# 2.2. test altering of columns that multiupdate uses
--
echo
# 2.2.1. normal mode
--
connection
default
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t1
ADD
COLUMN
a
int
(
11
)
unsigned
default
NULL
;
UPDATE
t1
SET
a
=
b
;
--
connection
writer
--
send
UPDATE
t1
,
((
SELECT
1
FROM
t1
t1i
)
UNION
(
SELECT
2
FROM
t1
t1ii
))
e
SET
a
=
0
WHERE
1
=
0
;
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t1
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
# Unknown column 'a' in 'field list'
--
reap
}
--
enable_query_log
--
echo
# 2.2.2. PS mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t1
ADD
COLUMN
a
INT
;
UPDATE
t1
SET
a
=
b
;
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t1, ((SELECT 1 FROM t1 t1i) UNION (SELECT 2 FROM t1 t1ii)) e SET a = 0 WHERE 1=0'
;
--
send
EXECUTE
stmt
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t1
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
# Unknown column 'a' in 'field list'
--
reap
}
--
enable_query_log
--
connection
default
DROP
TABLE
t1
;
--
echo
End
of
5.0
tests
...
...
mysql-test/t/lock_multi_bug38499.test
0 → 100644
View file @
0b2f4c56
# Bug38499 flush tables and multitable table update with derived table cause crash
# MySQL >= 5.0
#
# Save the initial number of concurrent sessions
--
source
include
/
count_sessions
.
inc
connect
(
locker
,
localhost
,
root
,,);
connect
(
writer
,
localhost
,
root
,,);
--
connection
default
--
disable_warnings
DROP
TABLE
IF
EXISTS
t1
;
--
enable_warnings
CREATE
TABLE
t1
(
a
INT
,
b
INT
);
INSERT
INTO
t1
VALUES
(
1
,
1
),
(
2
,
2
),
(
3
,
3
),
(
4
,
4
);
--
echo
# 1. test regular tables
--
echo
# 1.1. test altering of columns that multiupdate doesn't use
--
echo
# 1.1.1. normal mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
send
UPDATE
t1
,
(
SELECT
1
FROM
t1
t1i
)
d
SET
a
=
0
WHERE
1
=
0
;
--
connection
locker
ALTER
TABLE
t1
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t1
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
echo
# 1.1.2. PS mode
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t1, (SELECT 1 FROM t1 t1i) d SET a = 0 WHERE 1=0'
;
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
--
send
EXECUTE
stmt
--
connection
locker
ALTER
TABLE
t1
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t1
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
enable_query_log
--
echo
# 1.2. test altering of columns that multiupdate uses
--
echo
# 1.2.1. normal mode
--
connection
default
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t1
ADD
COLUMN
a
int
(
11
)
unsigned
default
NULL
;
UPDATE
t1
SET
a
=
b
;
--
connection
writer
--
send
UPDATE
t1
,
(
SELECT
1
FROM
t1
t1i
)
d
SET
a
=
0
WHERE
1
=
0
;
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t1
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
# unknown column error
--
reap
}
--
enable_query_log
--
echo
# 1.2.2. PS mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t1
ADD
COLUMN
a
INT
;
UPDATE
t1
SET
a
=
b
;
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t1, (SELECT 1 FROM t1 t1i) d SET a = 0 WHERE 1=0'
;
--
send
EXECUTE
stmt
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t1
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
# Unknown column 'a' in 'field list'
--
reap
}
--
enable_query_log
--
connection
default
ALTER
TABLE
t1
ADD
COLUMN
a
INT
;
--
echo
# 2. test UNIONs
--
echo
# 2.1. test altering of columns that multiupdate doesn't use
--
echo
# 2.1.1. normal mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
send
UPDATE
t1
,
((
SELECT
1
FROM
t1
t1i
)
UNION
(
SELECT
2
FROM
t1
t1ii
))
e
SET
a
=
0
WHERE
1
=
0
;
--
connection
locker
ALTER
TABLE
t1
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t1
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
echo
# 2.1.2. PS mode
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t1, ((SELECT 1 FROM t1 t1i) UNION (SELECT 2 FROM t1 t1ii)) e SET a = 0 WHERE 1=0'
;
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
--
send
EXECUTE
stmt
--
connection
locker
ALTER
TABLE
t1
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t1
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
enable_query_log
--
echo
# 2.2. test altering of columns that multiupdate uses
--
echo
# 2.2.1. normal mode
--
connection
default
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t1
ADD
COLUMN
a
int
(
11
)
unsigned
default
NULL
;
UPDATE
t1
SET
a
=
b
;
--
connection
writer
--
send
UPDATE
t1
,
((
SELECT
1
FROM
t1
t1i
)
UNION
(
SELECT
2
FROM
t1
t1ii
))
e
SET
a
=
0
WHERE
1
=
0
;
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t1
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
# Unknown column 'a' in 'field list'
--
reap
}
--
enable_query_log
--
echo
# 2.2.2. PS mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t1
ADD
COLUMN
a
INT
;
UPDATE
t1
SET
a
=
b
;
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t1, ((SELECT 1 FROM t1 t1i) UNION (SELECT 2 FROM t1 t1ii)) e SET a = 0 WHERE 1=0'
;
--
send
EXECUTE
stmt
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t1
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
# Unknown column 'a' in 'field list'
--
reap
}
--
enable_query_log
--
connection
default
DROP
TABLE
t1
;
# Close connections
--
disconnect
locker
--
disconnect
writer
# End of 5.0 tests
# Wait till all disconnects are completed
--
source
include
/
wait_until_count_sessions
.
inc
mysql-test/t/lock_multi_bug38691.test
0 → 100644
View file @
0b2f4c56
#
# Bug#38691 segfault/abort in ``UPDATE ...JOIN'' while
# ``FLUSH TABLES WITH READ LOCK''
# MySQL >= 5.0
#
# Save the initial number of concurrent sessions
--
source
include
/
count_sessions
.
inc
# Test to see if select will get the lock ahead of low priority update
connect
(
locker
,
localhost
,
root
,,);
connect
(
writer
,
localhost
,
root
,,);
--
connection
default
--
disable_warnings
DROP
TABLE
IF
EXISTS
t1
,
t2
,
t3
;
--
enable_warnings
CREATE
TABLE
t1
(
a
int
(
11
)
unsigned
default
NULL
,
b
varchar
(
255
)
default
NULL
,
UNIQUE
KEY
a
(
a
),
KEY
b
(
b
)
);
INSERT
INTO
t1
VALUES
(
1
,
1
),
(
2
,
2
),
(
3
,
3
);
CREATE
TABLE
t2
SELECT
*
FROM
t1
;
CREATE
TABLE
t3
SELECT
*
FROM
t1
;
--
echo
# test altering of columns that multiupdate doesn't use
--
echo
# normal mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
send
UPDATE
t2
INNER
JOIN
(
t1
JOIN
t3
USING
(
a
))
USING
(
a
)
SET
a
=
NULL
WHERE
t1
.
b
<>
t2
.
b
;
--
connection
locker
ALTER
TABLE
t2
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t2
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
echo
# PS mode
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a)
SET a = NULL WHERE t1.b <> t2.b'
;
let
$i
=
100
;
while
(
$i
)
{
--
dec
$i
--
connection
writer
--
send
EXECUTE
stmt
--
connection
locker
ALTER
TABLE
t2
ADD
COLUMN
(
c
INT
);
ALTER
TABLE
t2
DROP
COLUMN
c
;
--
connection
writer
--
reap
}
--
enable_query_log
--
echo
# test altering of columns that multiupdate uses
--
echo
# normal mode
--
connection
default
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t2
ADD
COLUMN
a
int
(
11
)
unsigned
default
NULL
;
UPDATE
t2
SET
a
=
b
;
--
connection
writer
--
send
UPDATE
t2
INNER
JOIN
(
t1
JOIN
t3
USING
(
a
))
USING
(
a
)
SET
a
=
NULL
WHERE
t1
.
b
<>
t2
.
b
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t2
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
--
reap
}
--
enable_query_log
--
echo
# PS mode
--
disable_query_log
let
$i
=
100
;
while
(
$i
)
{
dec
$i
;
--
connection
locker
--
error
0
,
ER_DUP_FIELDNAME
ALTER
TABLE
t2
ADD
COLUMN
a
int
(
11
)
unsigned
default
NULL
;
UPDATE
t2
SET
a
=
b
;
--
connection
writer
PREPARE
stmt
FROM
'UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a) SET a = NULL WHERE t1.b <> t2.b'
;
--
send
EXECUTE
stmt
--
connection
locker
--
error
0
,
ER_CANT_DROP_FIELD_OR_KEY
ALTER
TABLE
t2
DROP
COLUMN
a
;
--
connection
writer
--
error
0
,
ER_BAD_FIELD_ERROR
--
reap
}
--
enable_query_log
--
connection
default
DROP
TABLE
t1
,
t2
,
t3
;
# Close connections
--
disconnect
locker
--
disconnect
writer
# Wait till all disconnects are completed
--
source
include
/
wait_until_count_sessions
.
inc
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