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Merge gleb.loc:/home/uchum/work/bk/5.0-opt

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into  gleb.loc:/home/uchum/work/bk/5.1-opt


mysql-test/r/having.result:
  Auto merged
mysql-test/t/create.test:
  Auto merged
mysql-test/t/having.test:
  Auto merged
sql/field.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
mysql-test/include/mix1.inc:
  Merge with 5.0-opt.
mysql-test/r/create.result:
  Merge with 5.0-opt.
mysql-test/r/innodb_mysql.result:
  Merge with 5.0-opt.
mysql-test/r/type_enum.result:
  Merge with 5.0-opt.
mysql-test/t/type_enum.test:
  Merge with 5.0-opt.
sql/filesort.cc:
  Merge with 5.0-opt.
sql/sql_base.cc:
  Merge with 5.0-opt.
sql/table.cc:
  Merge with 5.0-opt.
storage/innobase/handler/ha_innodb.cc:
  Merge with 5.0-opt.
This commit is contained in:
unknown
2007-07-26 01:23:39 +05:00
parent 54c9742922 0784d92414
commit 21b83ab756
13 changed files with 504 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

85
mysql-test/include/mix1.inc
View File

@ -814,6 +814,91 @@ create table t1 (a int) engine=innodb;
alter table t1 alter a set default 1; alter table t1 alter a set default 1;
drop table t1; drop table t1;
#
# Bug #28591: MySQL need not sort the records in case of ORDER BY
# primary_key on InnoDB table
#
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a), KEY bkey (b)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,2),(3,2),(2,2),(4,2),(5,2),(6,2),(7,2),(8,2);
INSERT INTO t1 SELECT a + 8, 2 FROM t1;
INSERT INTO t1 SELECT a + 16, 1 FROM t1;
query_vertical EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a;
SELECT * FROM t1 WHERE b=2 ORDER BY a;
query_vertical EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
query_vertical EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a), KEY bkey (b,c))
ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,1,1),(3,1,1),(2,1,1),(4,1,1);
INSERT INTO t2 SELECT a + 4, 1, 1 FROM t2;
INSERT INTO t2 SELECT a + 8, 1, 1 FROM t2;
query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 ORDER BY a;
SELECT * FROM t2 WHERE b=1 ORDER BY a;
query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
DROP TABLE t1,t2;
#
# Bug #29644: alter table hangs if records locked in share mode by long
# running transaction
#
CREATE TABLE t1 (a INT, PRIMARY KEY (a)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8);
INSERT INTO t1 SELECT a + 8 FROM t1;
INSERT INTO t1 SELECT a + 16 FROM t1;
DELIMITER |;
CREATE PROCEDURE p1 ()
BEGIN
DECLARE i INT DEFAULT 50;
DECLARE cnt INT;
START TRANSACTION;
ALTER TABLE t1 ENGINE=InnoDB;
COMMIT;
START TRANSACTION;
WHILE (i > 0) DO
SET i = i - 1;
SELECT COUNT(*) INTO cnt FROM t1 LOCK IN SHARE MODE;
END WHILE;
COMMIT;
END;|
DELIMITER ;|
CONNECT (con1,localhost,root,,);
CONNECT (con2,localhost,root,,);
CONNECTION con1;
SEND CALL p1();
CONNECTION con2;
SEND CALL p1();
CONNECTION default;
CALL p1();
CONNECTION con1;
REAP;
CONNECTION con2;
REAP;
CONNECTION default;
DISCONNECT con1;
DISCONNECT con2;
DROP PROCEDURE p1;
DROP TABLE t1;
--echo End of 5.0 tests --echo End of 5.0 tests

13
mysql-test/r/create.result
View File

@ -1516,6 +1516,19 @@ t1 CREATE TABLE `t1` (
`c17` int(11) DEFAULT NULL `c17` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1; drop table t1;
create table t1(f1 int,f2 int);
insert into t1 value(1,1),(1,2),(1,3),(2,1),(2,2),(2,3);
flush status;
create table t2 select sql_big_result f1,count(f2) from t1 group by f1;
show status like 'handler_read%';
Variable_name Value
Handler_read_first 0
Handler_read_key 0
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 7
drop table t1,t2;
End of 5.0 tests End of 5.0 tests
CREATE TABLE t1 (a int, b int); CREATE TABLE t1 (a int, b int);
insert into t1 values (1,1),(1,2); insert into t1 values (1,1),(1,2);

19
mysql-test/r/having.result
View File

@ -158,6 +158,25 @@ EXPLAIN SELECT 0 AS x, a FROM t1 GROUP BY x,a HAVING x=1 AND a > 1;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
DROP table t1; DROP table t1;
CREATE TABLE t1 (a int PRIMARY KEY);
CREATE TABLE t2 (b int PRIMARY KEY, a int);
CREATE TABLE t3 (b int, flag int);
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1,1), (2,1), (3,1);
INSERT INTO t3(b,flag) VALUES (2, 1);
SELECT t1.a
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
a
SELECT DISTINCT t1.a, MAX(t3.flag)
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
a MAX(t3.flag)
SELECT DISTINCT t1.a
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
a
DROP TABLE t1,t2,t3;
create table t1 (col1 int, col2 varchar(5), col_t1 int); create table t1 (col1 int, col2 varchar(5), col_t1 int);
create table t2 (col1 int, col2 varchar(5), col_t2 int); create table t2 (col1 int, col2 varchar(5), col_t2 int);
create table t3 (col1 int, col2 varchar(5), col_t3 int); create table t3 (col1 int, col2 varchar(5), col_t3 int);

268
mysql-test/r/innodb_mysql.result
View File

@ -814,6 +814,274 @@ drop table if exists t1;
create table t1 (a int) engine=innodb; create table t1 (a int) engine=innodb;
alter table t1 alter a set default 1; alter table t1 alter a set default 1;
drop table t1; drop table t1;
CREATE TABLE t1 (a int, b int, PRIMARY KEY (a), KEY bkey (b)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,2),(3,2),(2,2),(4,2),(5,2),(6,2),(7,2),(8,2);
INSERT INTO t1 SELECT a + 8, 2 FROM t1;
INSERT INTO t1 SELECT a + 16, 1 FROM t1;
EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a;
id 1
select_type SIMPLE
table t1
type ref
possible_keys bkey
key bkey
key_len 5
ref const
rows 16
Extra Using where; Using index
SELECT * FROM t1 WHERE b=2 ORDER BY a;
a b
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
id 1
select_type SIMPLE
table t1
type range
possible_keys bkey
key bkey
key_len 5
ref NULL
rows 16
Extra Using where; Using index; Using filesort
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
a b
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
17 1
18 1
19 1
20 1
21 1
22 1
23 1
24 1
25 1
26 1
27 1
28 1
29 1
30 1
31 1
32 1
EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
id 1
select_type SIMPLE
table t1
type range
possible_keys bkey
key bkey
key_len 5
ref NULL
rows 16
Extra Using where; Using index
SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
a b
17 1
18 1
19 1
20 1
21 1
22 1
23 1
24 1
25 1
26 1
27 1
28 1
29 1
30 1
31 1
32 1
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 2
9 2
10 2
11 2
12 2
13 2
14 2
15 2
16 2
CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a), KEY bkey (b,c))
ENGINE=InnoDB;
INSERT INTO t2 VALUES (1,1,1),(3,1,1),(2,1,1),(4,1,1);
INSERT INTO t2 SELECT a + 4, 1, 1 FROM t2;
INSERT INTO t2 SELECT a + 8, 1, 1 FROM t2;
EXPLAIN SELECT * FROM t2 WHERE b=1 ORDER BY a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 5
ref const
rows 8
Extra Using where; Using index; Using filesort
SELECT * FROM t2 WHERE b=1 ORDER BY a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
id 1
select_type SIMPLE
table t2
type ref
possible_keys bkey
key bkey
key_len 10
ref const,const
rows 8
Extra Using where; Using index
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
a b c
1 1 1
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
8 1 1
9 1 1
10 1 1
11 1 1
12 1 1
13 1 1
14 1 1
15 1 1
16 1 1
DROP TABLE t1,t2;
CREATE TABLE t1 (a INT, PRIMARY KEY (a)) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8);
INSERT INTO t1 SELECT a + 8 FROM t1;
INSERT INTO t1 SELECT a + 16 FROM t1;
CREATE PROCEDURE p1 ()
BEGIN
DECLARE i INT DEFAULT 50;
DECLARE cnt INT;
START TRANSACTION;
ALTER TABLE t1 ENGINE=InnoDB;
COMMIT;
START TRANSACTION;
WHILE (i > 0) DO
SET i = i - 1;
SELECT COUNT(*) INTO cnt FROM t1 LOCK IN SHARE MODE;
END WHILE;
COMMIT;
END;|
CALL p1();
CALL p1();
CALL p1();
DROP PROCEDURE p1;
DROP TABLE t1;
End of 5.0 tests End of 5.0 tests
CREATE TABLE `t2` ( CREATE TABLE `t2` (
`k` int(11) NOT NULL auto_increment, `k` int(11) NOT NULL auto_increment,

24
mysql-test/r/type_enum.result
View File

@ -1829,4 +1829,28 @@ c1 + 0
2 2
0 0
2 2
DROP TABLE t1,t2;
CREATE TABLE t1(a enum('a','b','c','d'));
INSERT INTO t1 VALUES (4),(1),(0),(3);
Warnings:
Warning 1265 Data truncated for column 'a' at row 3
SELECT a FROM t1;
a
d
a
c
EXPLAIN SELECT a FROM t1 WHERE a=0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where
SELECT a FROM t1 WHERE a=0;
a
ALTER TABLE t1 ADD PRIMARY KEY (a);
EXPLAIN SELECT a FROM t1 WHERE a=0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const PRIMARY PRIMARY 1 const 1 Using index
SELECT a FROM t1 WHERE a=0;
a
DROP TABLE t1; DROP TABLE t1;

10
mysql-test/t/create.test
View File

@ -1123,6 +1123,16 @@ show create table t1;
drop table t1; drop table t1;
#
# Bug#15130:CREATE .. SELECT was denied to use advantages of the SQL_BIG_RESULT.
#
create table t1(f1 int,f2 int);
insert into t1 value(1,1),(1,2),(1,3),(2,1),(2,2),(2,3);
flush status;
create table t2 select sql_big_result f1,count(f2) from t1 group by f1;
show status like 'handler_read%';
drop table t1,t2;
--echo End of 5.0 tests --echo End of 5.0 tests
# #

26
mysql-test/t/having.test
View File

@ -151,6 +151,32 @@ EXPLAIN SELECT 0 AS x, a FROM t1 GROUP BY x,a HAVING x=1 AND a > 1;
DROP table t1; DROP table t1;
#
# Bug #29911: HAVING clause depending on constant table and evaluated to false
#
CREATE TABLE t1 (a int PRIMARY KEY);
CREATE TABLE t2 (b int PRIMARY KEY, a int);
CREATE TABLE t3 (b int, flag int);
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1,1), (2,1), (3,1);
INSERT INTO t3(b,flag) VALUES (2, 1);
SELECT t1.a
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
SELECT DISTINCT t1.a, MAX(t3.flag)
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
SELECT DISTINCT t1.a
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
DROP TABLE t1,t2,t3;
# End of 4.1 tests # End of 4.1 tests
# #

20
mysql-test/t/type_enum.test
View File

@ -200,4 +200,24 @@ CREATE TABLE t2 SELECT * FROM t1;
CREATE TABLE t2 SELECT * FROM t1; CREATE TABLE t2 SELECT * FROM t1;
SELECT c1 + 0 FROM t2; SELECT c1 + 0 FROM t2;
DROP TABLE t1,t2;
#
# Bug#29661: Lookup by 0 for a primary index over a enum type
#
CREATE TABLE t1(a enum('a','b','c','d'));
INSERT INTO t1 VALUES (4),(1),(0),(3);
SELECT a FROM t1;
EXPLAIN SELECT a FROM t1 WHERE a=0;
SELECT a FROM t1 WHERE a=0;
ALTER TABLE t1 ADD PRIMARY KEY (a);
EXPLAIN SELECT a FROM t1 WHERE a=0;
SELECT a FROM t1 WHERE a=0;
DROP TABLE t1;

7
sql/field.cc
View File

@ -7901,8 +7901,11 @@ int Field_enum::store(longlong nr, bool unsigned_val)
if ((ulonglong) nr > typelib->count || nr == 0) if ((ulonglong) nr > typelib->count || nr == 0)
{ {
set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, WARN_DATA_TRUNCATED, 1); set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, WARN_DATA_TRUNCATED, 1);
nr=0; if (nr != 0 || table->in_use->count_cuted_fields)
error=1; {
nr= 0;
error= 1;
}
} }
store_type((ulonglong) (uint) nr); store_type((ulonglong) (uint) nr);
return error; return error;

7
sql/sql_base.cc
View File

@ -3797,13 +3797,6 @@ TABLE *open_ltable(THD *thd, TABLE_LIST *table_list, thr_lock_type lock_type)
if (table) if (table)
{ {
#if defined( __WIN__)
/* Win32 can't drop a file that is open */
if (lock_type == TL_WRITE_ALLOW_READ)
{
lock_type= TL_WRITE;
}
#endif /* __WIN__ */
table_list->lock_type= lock_type; table_list->lock_type= lock_type;
table_list->table= table; table_list->table= table;
table->grant= table_list->grant; table->grant= table_list->grant;

32
sql/sql_select.cc
View File

@ -12289,6 +12289,7 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
key_part_end=key_part+table->key_info[idx].key_parts; key_part_end=key_part+table->key_info[idx].key_parts;
key_part_map const_key_parts=table->const_key_parts[idx]; key_part_map const_key_parts=table->const_key_parts[idx];
int reverse=0; int reverse=0;
my_bool on_primary_key= FALSE;
DBUG_ENTER("test_if_order_by_key"); DBUG_ENTER("test_if_order_by_key");
for (; order ; order=order->next, const_key_parts>>=1) for (; order ; order=order->next, const_key_parts>>=1)
@ -12303,7 +12304,31 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
for (; const_key_parts & 1 ; const_key_parts>>= 1) for (; const_key_parts & 1 ; const_key_parts>>= 1)
key_part++; key_part++;
if (key_part == key_part_end || key_part->field != field) if (key_part == key_part_end)
{
/*
We are at the end of the key. Check if the engine has the primary
key as a suffix to the secondary keys. If it has continue to check
the primary key as a suffix.
*/
if (!on_primary_key &&
(table->file->table_flags() & HA_PRIMARY_KEY_IN_READ_INDEX) &&
table->s->db_type == DB_TYPE_INNODB &&
table->s->primary_key != MAX_KEY)
{
on_primary_key= TRUE;
key_part= table->key_info[table->s->primary_key].key_part;
key_part_end=key_part+table->key_info[table->s->primary_key].key_parts;
const_key_parts=table->const_key_parts[table->s->primary_key];
for (; const_key_parts & 1 ; const_key_parts>>= 1)
key_part++;
}
else
DBUG_RETURN(0);
}
if (key_part->field != field)
DBUG_RETURN(0); DBUG_RETURN(0);
/* set flag to 1 if we can use read-next on key, else to -1 */ /* set flag to 1 if we can use read-next on key, else to -1 */
@ -12314,7 +12339,8 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
reverse=flag; // Remember if reverse reverse=flag; // Remember if reverse
key_part++; key_part++;
} }
*used_key_parts= (uint) (key_part - table->key_info[idx].key_part); *used_key_parts= on_primary_key ? table->key_info[idx].key_parts :
(uint) (key_part - table->key_info[idx].key_part);
if (reverse == -1 && !(table->file->index_flags(idx, *used_key_parts-1, 1) & if (reverse == -1 && !(table->file->index_flags(idx, *used_key_parts-1, 1) &
HA_READ_PREV)) HA_READ_PREV))
reverse= 0; // Index can't be used reverse= 0; // Index can't be used
@ -13030,7 +13056,7 @@ remove_duplicates(JOIN *join, TABLE *entry,List<Item> &fields, Item *having)
field_count++; field_count++;
} }
if (!field_count && !(join->select_options & OPTION_FOUND_ROWS)) if (!field_count && !(join->select_options & OPTION_FOUND_ROWS) && !having)
{ // only const items with no OPTION_FOUND_ROWS { // only const items with no OPTION_FOUND_ROWS
join->unit->select_limit_cnt= 1; // Only send first row join->unit->select_limit_cnt= 1; // Only send first row
DBUG_RETURN(0); DBUG_RETURN(0);

5
sql/table.cc
View File

@ -1349,7 +1349,12 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
the primary key, then we can use any key to find this column the primary key, then we can use any key to find this column
*/ */
if (ha_option & HA_PRIMARY_KEY_IN_READ_INDEX) if (ha_option & HA_PRIMARY_KEY_IN_READ_INDEX)
{
field->part_of_key= share->keys_in_use; field->part_of_key= share->keys_in_use;
if (share->db_type == DB_TYPE_INNODB &&
field->part_of_sortkey.is_set(key))
field->part_of_sortkey= share->keys_in_use;
}
} }
if (field->key_length() != key_part->length) if (field->key_length() != key_part->length)
{ {

12
storage/innobase/handler/ha_innodb.cc
View File

@ -7042,18 +7042,6 @@ ha_innobase::store_lock(
&& !thd_tablespace_op(thd) && !thd_tablespace_op(thd)
&& sql_command != SQLCOM_TRUNCATE && sql_command != SQLCOM_TRUNCATE
&& sql_command != SQLCOM_OPTIMIZE && sql_command != SQLCOM_OPTIMIZE
#ifdef __WIN__
/* For alter table on win32 for successful
operation completion it is used TL_WRITE(=10) lock
instead of TL_WRITE_ALLOW_READ(=6), however here
in innodb handler TL_WRITE is lifted to
TL_WRITE_ALLOW_WRITE, which causes race condition
when several clients do alter table simultaneously
(bug #17264). This fix avoids the problem. */
&& sql_command != SQLCOM_ALTER_TABLE
#endif
&& sql_command != SQLCOM_CREATE_TABLE) { && sql_command != SQLCOM_CREATE_TABLE) {
lock_type = TL_WRITE_ALLOW_WRITE; lock_type = TL_WRITE_ALLOW_WRITE;