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

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

13 files changed, 504 insertions, 24 deletions

diff --git a/mysql-test/include/mix1.inc b/mysql-test/include/mix1.inc
index e863e59fad6..591971a32a4 100644
--- a/mysql-test/include/mix1.inc
+++ b/mysql-test/include/mix1.inc
@@ -814,6 +814,91 @@ create table t1 (a int) engine=innodb;
 alter table t1 alter a set default 1;
 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
 
 
diff --git a/mysql-test/r/create.result b/mysql-test/r/create.result
index cdbb767dd9f..74907f39bf9 100644
--- a/mysql-test/r/create.result
+++ b/mysql-test/r/create.result
@@ -1516,6 +1516,19 @@ t1	CREATE TABLE `t1` (
   `c17` int(11) DEFAULT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 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
 CREATE TABLE t1 (a int, b int);
 insert into t1 values (1,1),(1,2);
diff --git a/mysql-test/r/having.result b/mysql-test/r/having.result
index 149391396b6..a5a96fd4958 100644
--- a/mysql-test/r/having.result
+++ b/mysql-test/r/having.result
@@ -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
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible HAVING
 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 t2 (col1 int, col2 varchar(5), col_t2 int);
 create table t3 (col1 int, col2 varchar(5), col_t3 int);
diff --git a/mysql-test/r/innodb_mysql.result b/mysql-test/r/innodb_mysql.result
index 3dc134352db..273374d016b 100644
--- a/mysql-test/r/innodb_mysql.result
+++ b/mysql-test/r/innodb_mysql.result
@@ -814,6 +814,274 @@ drop table if exists t1;
 create table t1 (a int) engine=innodb;
 alter table t1 alter a set default 1;
 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
 CREATE TABLE `t2` (
 `k` int(11) NOT NULL auto_increment,
diff --git a/mysql-test/r/type_enum.result b/mysql-test/r/type_enum.result
index ec72a6eb995..051cfe61384 100644
--- a/mysql-test/r/type_enum.result
+++ b/mysql-test/r/type_enum.result
@@ -1829,4 +1829,28 @@ c1 + 0
 0
 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;
 End of 5.1 tests
diff --git a/mysql-test/t/create.test b/mysql-test/t/create.test
index dd3037ce88d..8954f15f22e 100644
--- a/mysql-test/t/create.test
+++ b/mysql-test/t/create.test
@@ -1123,6 +1123,16 @@ show create 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
 
 #
diff --git a/mysql-test/t/having.test b/mysql-test/t/having.test
index 41266cc6d32..683abfd3783 100644
--- a/mysql-test/t/having.test
+++ b/mysql-test/t/having.test
@@ -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;  
 
+#
+# 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
 
 #
diff --git a/mysql-test/t/type_enum.test b/mysql-test/t/type_enum.test
index 4d5d5ec8a86..2043342e2c8 100644
--- a/mysql-test/t/type_enum.test
+++ b/mysql-test/t/type_enum.test
@@ -200,4 +200,24 @@ CREATE TABLE t2 SELECT * FROM t1;
 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;
+
 --echo End of 5.1 tests
diff --git a/sql/field.cc b/sql/field.cc
index a970a6e4318..3213f84ee3e 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -7901,8 +7901,11 @@ int Field_enum::store(longlong nr, bool unsigned_val)
   if ((ulonglong) nr > typelib->count || nr == 0)
   {
     set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, WARN_DATA_TRUNCATED, 1);
-    nr=0;
-    error=1;
+    if (nr != 0 || table->in_use->count_cuted_fields)
+    {
+      nr= 0;
+      error= 1;
+    }
   }
   store_type((ulonglong) (uint) nr);
   return error;
diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index 6fd57c5a428..4773981e877 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -3797,13 +3797,6 @@ TABLE *open_ltable(THD *thd, TABLE_LIST *table_list, thr_lock_type lock_type)
 
   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->table=	   table;
     table->grant= table_list->grant;
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index be6d1f74852..b1954620800 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -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_map const_key_parts=table->const_key_parts[idx];
   int reverse=0;
+  my_bool on_primary_key= FALSE;
   DBUG_ENTER("test_if_order_by_key");
 
   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)
       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);
 
     /* 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
     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) &
                          HA_READ_PREV))
     reverse= 0;                                 // Index can't be used
@@ -13030,7 +13056,7 @@ remove_duplicates(JOIN *join, TABLE *entry,List<Item> &fields, Item *having)
       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
     join->unit->select_limit_cnt= 1;		// Only send first row
     DBUG_RETURN(0);
diff --git a/sql/table.cc b/sql/table.cc
index 2c4d18ca4ff..a7ab27f0760 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -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
           */
           if (ha_option & HA_PRIMARY_KEY_IN_READ_INDEX)
+          {
             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)
         {
diff --git a/storage/innobase/handler/ha_innodb.cc b/storage/innobase/handler/ha_innodb.cc
index b7d0c4417c3..840a0ec7e3b 100644
--- a/storage/innobase/handler/ha_innodb.cc
+++ b/storage/innobase/handler/ha_innodb.cc
@@ -7042,18 +7042,6 @@ ha_innobase::store_lock(
 		    && !thd_tablespace_op(thd)
 		    && sql_command != SQLCOM_TRUNCATE
 		    && 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) {
 
 			lock_type = TL_WRITE_ALLOW_WRITE;