Merge jamppa@bk-internal.mysql.com:/home/bk/mysql-5.1-new

into  a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-5.1-new-merge_060509


sql/sql_parse.cc:
  Auto merged
sql/sql_show.cc:
  Auto merged

mysql-test/r/ndb_bitfield.result

@@ -9,7 +9,7 @@ t1	CREATE TABLE `t1` (
   `pk1` int(11) NOT NULL,
   `b` bit(64) DEFAULT NULL,
   PRIMARY KEY (`pk1`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 insert into t1 values 
 (0,b'1111111111111111111111111111111111111111111111111111111111111111'),
 (1,b'1000000000000000000000000000000000000000000000000000000000000000'),

mysql-test/r/ndb_dd_basic.result

@@ -49,7 +49,7 @@ t1	CREATE TABLE `t1` (
   `b` int(11) NOT NULL,
   `c` int(11) NOT NULL,
   PRIMARY KEY (`pk1`)
-) TABLESPACE ts1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) TABLESPACE ts1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1
 INSERT INTO t1 VALUES (0, 0, 0);
 SELECT * FROM t1;
 pk1	b	c

mysql-test/r/ndb_dd_disk2memory.result

@@ -218,7 +218,7 @@ t2	CREATE TABLE `t2` (
   `b2` int(11) NOT NULL,
   `c2` int(11) NOT NULL,
   PRIMARY KEY (`pk2`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SHOW CREATE TABLE test.t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
@@ -226,7 +226,7 @@ t1	CREATE TABLE `t1` (
   `b` int(11) NOT NULL,
   `c` int(11) NOT NULL,
   PRIMARY KEY (`pk1`)
-) TABLESPACE table_space1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) TABLESPACE table_space1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1
 ALTER TABLE test.t2 TABLESPACE table_space1 STORAGE DISK
 ENGINE=NDB;
 SHOW CREATE TABLE test.t2;
@@ -236,7 +236,7 @@ t2	CREATE TABLE `t2` (
   `b2` int(11) NOT NULL,
   `c2` int(11) NOT NULL,
   PRIMARY KEY (`pk2`)
-) TABLESPACE table_space1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) TABLESPACE table_space1 STORAGE DISK ENGINE=ndbcluster DEFAULT CHARSET=latin1
 ALTER TABLE test.t1 ENGINE=NDBCLUSTER;
 SHOW CREATE TABLE test.t1;
 Table	Create Table
@@ -245,7 +245,7 @@ t1	CREATE TABLE `t1` (
   `b` int(11) NOT NULL,
   `c` int(11) NOT NULL,
   PRIMARY KEY (`pk1`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 
 DROP TABLE test.t1;
 DROP TABLE test.t2;

mysql-test/r/ndb_gis.result

@@ -14,7 +14,7 @@ gis_point	CREATE TABLE `gis_point` (
   `fid` int(11) NOT NULL AUTO_INCREMENT,
   `g` point DEFAULT NULL,
   PRIMARY KEY (`fid`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SHOW FIELDS FROM gis_point;
 Field	Type	Null	Key	Default	Extra
 fid	int(11)	NO	PRI	NULL	auto_increment
@@ -476,7 +476,7 @@ gis_point	CREATE TABLE `gis_point` (
   `fid` int(11) NOT NULL AUTO_INCREMENT,
   `g` point DEFAULT NULL,
   PRIMARY KEY (`fid`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SHOW FIELDS FROM gis_point;
 Field	Type	Null	Key	Default	Extra
 fid	int(11)	NO	PRI	NULL	auto_increment

mysql-test/r/ndb_partition_key.result

@@ -137,7 +137,7 @@ show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
   `a` int(11) DEFAULT NULL
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 alter table t1
 partition by key(a)
 (partition p0 engine=ndb, partition p1);
@@ -197,3 +197,44 @@ ENGINE=NDB
 PARTITION BY KEY(c3);
 ALTER TABLE t1 ADD COLUMN c4 INT AFTER c1;
 DROP TABLE t1;
+create table t1 (a int) engine = ndb;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
+alter table t1 add column b int;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
+alter table t1 engine = myisam;
+alter table t1 engine = ndb;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
+alter table t1 coalesce partition 1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL,
+  `b` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () PARTITIONS 1 
+drop table t1 ;
+create table t1 (a int) engine = ndb;
+alter table t1 add partition partitions 1;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () PARTITIONS 3 
+drop table t1;
+CREATE TABLE t1 (a int)
+PARTITION BY KEY(a)
+(PARTITION p0 ENGINE = NDB);
+DROP TABLE t1;

mysql-test/r/partition.result

@@ -886,4 +886,36 @@ s1
 2
 3
 drop table t1;
+create table t1 (a varchar(1))
+partition by key (a)
+as select 'a';
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` varchar(1) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY KEY (a) 
+drop table t1;
+CREATE TABLE t1 (a int) ENGINE = MYISAM PARTITION BY KEY(a);
+INSERT into t1 values (1), (2);
+SHOW TABLE STATUS;
+Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
+t1	MyISAM	10	Fixed	2	7	14	0	0	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned	
+DELETE from t1 where a = 1;
+SHOW TABLE STATUS;
+Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
+t1	MyISAM	10	Fixed	1	14	14	0	0	7	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned	
+ALTER TABLE t1 OPTIMIZE PARTITION p0;
+SHOW TABLE STATUS;
+Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
+t1	MyISAM	10	Fixed	1	7	7	0	1024	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned	
+DROP TABLE t1;
+CREATE TABLE t1 (a int, index(a)) PARTITION BY KEY(a);
+ALTER TABLE t1 DISABLE KEYS;
+ALTER TABLE t1 ENABLE KEYS;
+DROP TABLE t1;
+create table t1 (a int) engine=memory
+partition by key(a);
+insert into t1 values (1);
+create index inx1 on t1(a);
+drop table t1;
 End of 5.1 tests

mysql-test/r/rpl_ndb_UUID.result

@@ -33,7 +33,7 @@ t1	CREATE TABLE `t1` (
   `blob_column` longblob,
   `vchar_column` varchar(100) DEFAULT NULL,
   PRIMARY KEY (`a`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 DROP PROCEDURE test.p1;
 DROP FUNCTION test.fn1;
 DROP TABLE test.t1;

mysql-test/r/rpl_ndb_dd_advance.result

@@ -69,7 +69,7 @@ t1	CREATE TABLE `t1` (
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`,`c3`),
   KEY `c5` (`c5`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 **** Show first set of ALTERs on SLAVE ****
 SHOW CREATE TABLE t1;
 Table	Create Table
@@ -82,7 +82,7 @@ t1	CREATE TABLE `t1` (
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`,`c3`),
   KEY `c5` (`c5`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 **** Second set of alters test 1 ****
 ALTER TABLE t1 RENAME t2;
 ALTER TABLE t2 DROP INDEX c5;
@@ -101,7 +101,7 @@ t1	CREATE TABLE `t1` (
   `c5` double DEFAULT NULL,
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`,`c3`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 **** Show second set of ALTERs on SLAVE ****
 SHOW CREATE TABLE t1;
 Table	Create Table
@@ -113,7 +113,7 @@ t1	CREATE TABLE `t1` (
   `c5` double DEFAULT NULL,
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`,`c3`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 **** Third and last set of alters for test1  ****
 ALTER TABLE t1 CHANGE c1 c1 DOUBLE;
 ALTER TABLE t1 CHANGE c2 c2 DECIMAL(10,2);
@@ -135,7 +135,7 @@ t1	CREATE TABLE `t1` (
   `c5` double DEFAULT NULL,
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SELECT * FROM t1 ORDER BY c1 LIMIT 5;
 c1	c2	c3	c5
 1	2.00	b1b1b1b1b1b1b1b1b1b1	NULL
@@ -153,7 +153,7 @@ t1	CREATE TABLE `t1` (
   `c5` double DEFAULT NULL,
   PRIMARY KEY (`c1`),
   KEY `t1_i` (`c2`)
-) ENGINE=ndbcluster DEFAULT CHARSET=latin1 PARTITION BY KEY () 
+) ENGINE=ndbcluster DEFAULT CHARSET=latin1
 SELECT * FROM t1 where c1 = 1;
 c1	c2	c3	c5
 1	2.00	b1b1b1b1b1b1b1b1b1b1	NULL

mysql-test/t/ndb_partition_key.test

@@ -196,3 +196,29 @@ CREATE TABLE t1 (
 
 ALTER TABLE t1 ADD COLUMN c4 INT AFTER c1;
 DROP TABLE t1;
+
+#
+# BUG 19010: ALTER TABLE from NDB to other engine without primary key
+#            doesn't work.
+#
+create table t1 (a int) engine = ndb;
+show create table t1;
+alter table t1 add column b int;
+show create table t1;
+alter table t1 engine = myisam;
+alter table t1 engine = ndb;
+show create table t1;
+alter table t1 coalesce partition 1;
+show create table t1;
+drop table t1 ;
+create table t1 (a int) engine = ndb;
+alter table t1 add partition partitions 1;
+show create table t1;
+drop table t1;
+
+CREATE TABLE t1 (a int)
+PARTITION BY KEY(a)
+(PARTITION p0 ENGINE = NDB);
+DROP TABLE t1;
+
+

mysql-test/t/partition.test

@@ -9,6 +9,11 @@
 drop table if exists t1;
 --enable_warnings
 
+create table t1 (a int)
+partition by key(a)
+(partition p0 engine = MEMORY);
+drop table t1;
+
 #
 # Partition by key no partition defined => OK
 #
@@ -1009,4 +1014,46 @@ select auto_increment from information_schema.tables where table_name='t1';
 select * from t1;
 drop table t1;
 
+#
+# BUG 19140 Partitions: Create index for partitioned table crashes
+#
+create table t1 (a int) engine=memory
+partition by key(a);
+insert into t1 values (1);
+create index inx1 on t1(a);
+drop table t1;
+
+#
+# BUG 19062 Partition clause ignored if CREATE TABLE ... AS SELECT ...;
+#
+create table t1 (a varchar(1))
+partition by key (a)
+as select 'a';
+
+show create table t1;
+drop table t1;
+
+#
+# BUG 19501 Partitions: SHOW TABLE STATUS shows wrong Data_free
+#
+CREATE TABLE t1 (a int) ENGINE = MYISAM PARTITION BY KEY(a);
+INSERT into t1 values (1), (2);
+--replace_column 9 0 12 NULL 13 NULL 14 NULL
+SHOW TABLE STATUS;
+DELETE from t1 where a = 1;
+--replace_column 9 0 12 NULL 13 NULL 14 NULL
+SHOW TABLE STATUS;
+ALTER TABLE t1 OPTIMIZE PARTITION p0;
+--replace_column 12 NULL 13 NULL 14 NULL
+SHOW TABLE STATUS;
+DROP TABLE t1;
+
+#
+# BUG 19502: ENABLE/DISABLE Keys don't work for partitioned tables
+#
+CREATE TABLE t1 (a int, index(a)) PARTITION BY KEY(a);
+ALTER TABLE t1 DISABLE KEYS;
+ALTER TABLE t1 ENABLE KEYS;
+DROP TABLE t1;
+
 --echo End of 5.1 tests

sql/ha_partition.cc

@@ -4175,6 +4175,8 @@ void ha_partition::info(uint flag)
       index_file_length: Length of index file, in principle bytes in
       indexes in the table
       We report sum
+      delete_length: Length of free space easily used by new records in table
+      We report sum
       mean_record_length:Mean record length in the table
       We calculate this
       check_time:        Time of last check (only applicable to MyISAM)
@@ -4184,6 +4186,7 @@ void ha_partition::info(uint flag)
     deleted= 0;
     data_file_length= 0;
     index_file_length= 0;
+    delete_length= 0;
     check_time= 0;
     file_array= m_file;
     do
@@ -4196,6 +4199,7 @@ void ha_partition::info(uint flag)
         deleted+= file->deleted;
         data_file_length+= file->data_file_length;
         index_file_length+= file->index_file_length;
+        delete_length+= file->delete_length;
         if (file->check_time > check_time)
           check_time= file->check_time;
       }
@@ -5324,6 +5328,82 @@ void ha_partition::init_table_handle_for_HANDLER()
 }
 
 
+/****************************************************************************
+                MODULE enable/disable indexes
+****************************************************************************/
+
+/*
+  Disable indexes for a while
+  SYNOPSIS
+    disable_indexes()
+    mode                      Mode
+  RETURN VALUES
+    0                         Success
+    != 0                      Error
+*/
+
+int ha_partition::disable_indexes(uint mode)
+{
+  handler **file;
+  int error= 0;
+
+  for (file= m_file; *file; file++)
+  {
+    if ((error= (*file)->disable_indexes(mode)))
+      break;
+  }
+  return error;
+}
+
+
+/*
+  Enable indexes again
+  SYNOPSIS
+    enable_indexes()
+    mode                      Mode
+  RETURN VALUES
+    0                         Success
+    != 0                      Error
+*/
+
+int ha_partition::enable_indexes(uint mode)
+{
+  handler **file;
+  int error= 0;
+
+  for (file= m_file; *file; file++)
+  {
+    if ((error= (*file)->enable_indexes(mode)))
+      break;
+  }
+  return error;
+}
+
+
+/*
+  Check if indexes are disabled
+  SYNOPSIS
+    indexes_are_disabled()
+
+  RETURN VALUES
+    0                      Indexes are enabled
+    != 0                   Indexes are disabled
+*/
+
+int ha_partition::indexes_are_disabled(void)
+{
+  handler **file;
+  int error= 0;
+
+  for (file= m_file; *file; file++)
+  {
+    if ((error= (*file)->indexes_are_disabled()))
+      break;
+  }
+  return error;
+}
+
+
 /****************************************************************************
                 MODULE Partition Share
 ****************************************************************************/

sql/ha_partition.h

@@ -938,17 +938,18 @@ class ha_partition :public handler
     virtual uint checksum() const;
     virtual bool is_crashed() const;
     virtual bool auto_repair() const;
+  */
 
+  /*
     -------------------------------------------------------------------------
     MODULE enable/disable indexes
     -------------------------------------------------------------------------
-    Enable/Disable Indexes are not supported currently (Heap, MyISAM)
-    This means that the following methods are not implemented:
+    Enable/Disable Indexes are only supported by HEAP and MyISAM.
     -------------------------------------------------------------------------
+  */
     virtual int disable_indexes(uint mode);
     virtual int enable_indexes(uint mode);
     virtual int indexes_are_disabled(void);
-  */
 
   /*
     -------------------------------------------------------------------------

sql/partition_info.h

@@ -184,6 +184,7 @@ class partition_info : public Sql_alloc
   bool list_of_subpart_fields;
   bool linear_hash_ind;
   bool fixed;
+  bool is_auto_partitioned;
   bool from_openfrm;
   bool has_null_value;
   uint has_null_part_id;
@@ -219,6 +220,7 @@ class partition_info : public Sql_alloc
     list_of_part_fields(FALSE), list_of_subpart_fields(FALSE),
     linear_hash_ind(FALSE),
     fixed(FALSE),
+    is_auto_partitioned(FALSE),
     from_openfrm(FALSE),
     has_null_value(FALSE),
     has_null_part_id(0)

sql/sql_parse.cc

@@ -2855,6 +2855,17 @@ mysql_execute_command(THD *thd)
       res= 1;
       goto end_with_restore_list;
     }
+#ifdef WITH_PARTITION_STORAGE_ENGINE
+    {
+      partition_info *part_info= thd->lex->part_info;
+      if (part_info && !(part_info= thd->lex->part_info->get_clone()))
+      {
+        res= -1;
+        goto end_with_restore_list;
+      }
+      thd->work_part_info= part_info;
+    }
+#endif
     if (select_lex->item_list.elements)		// With select
     {
       select_result *result;
@@ -2924,15 +2935,6 @@ mysql_execute_command(THD *thd)
                                      lex->like_name); 
       else
       {
-#ifdef WITH_PARTITION_STORAGE_ENGINE
-        partition_info *part_info= thd->lex->part_info;
-        if (part_info && !(part_info= thd->lex->part_info->get_clone()))
-        {
-          res= -1;
-          goto end_with_restore_list;
-        }
-        thd->work_part_info= part_info;
-#endif
         res= mysql_create_table(thd, create_table->db,
 				create_table->table_name, &lex->create_info,
 				lex->create_list,

sql/sql_partition.cc

@@ -4076,6 +4076,7 @@ that are reorganised.
           tab_part_info->use_default_partitions= FALSE;
         }
         tab_part_info->use_default_no_partitions= FALSE;
+        tab_part_info->is_auto_partitioned= FALSE;
       }
     }
     else if (alter_info->flags == ALTER_DROP_PARTITION)
@@ -4091,6 +4092,8 @@ that are reorganised.
       uint no_parts_dropped= alter_info->partition_names.elements;
       uint no_parts_found= 0;
       List_iterator<partition_element> part_it(tab_part_info->partitions);
+
+      tab_part_info->is_auto_partitioned= FALSE;
       if (!(tab_part_info->part_type == RANGE_PARTITION ||
             tab_part_info->part_type == LIST_PARTITION))
       {
@@ -4275,7 +4278,10 @@ state of p1.
         tab_part_info->no_parts= no_parts_remain;
       }
       if (!(alter_info->flags & ALTER_TABLE_REORG))
+      {
         tab_part_info->use_default_no_partitions= FALSE;
+        tab_part_info->is_auto_partitioned= FALSE;
+      }
     }
     else if (alter_info->flags == ALTER_REORGANIZE_PARTITION)
     {
@@ -4294,6 +4300,8 @@ state of p1.
       uint no_parts_new= thd->work_part_info->partitions.elements;
       partition_info *alt_part_info= thd->work_part_info;
       uint check_total_partitions;
+
+      tab_part_info->is_auto_partitioned= FALSE;
       if (no_parts_reorged > tab_part_info->no_parts)
       {
         my_error(ER_REORG_PARTITION_NOT_EXIST, MYF(0));
@@ -4510,7 +4518,7 @@ the generated partition syntax in a correct manner.
       if (alter_info->flags & ALTER_REMOVE_PARTITIONING)
       {
         DBUG_PRINT("info", ("Remove partitioning"));
-        if (!(thd->lex->create_info.used_fields & HA_CREATE_USED_ENGINE))
+        if (!(create_info->used_fields & HA_CREATE_USED_ENGINE))
         {
           DBUG_PRINT("info", ("No explicit engine used"));
           create_info->db_type= table->part_info->default_engine_type;
@@ -4527,14 +4535,29 @@ the generated partition syntax in a correct manner.
           beneath.
         */
         thd->work_part_info= table->part_info;
-        if (thd->lex->create_info.used_fields & HA_CREATE_USED_ENGINE &&
+        if (create_info->used_fields & HA_CREATE_USED_ENGINE &&
             create_info->db_type != table->part_info->default_engine_type)
         {
           /*
             Make sure change of engine happens to all partitions.
           */
           DBUG_PRINT("info", ("partition changed"));
-          set_engine_all_partitions(thd->work_part_info, create_info->db_type);
+          if (table->part_info->is_auto_partitioned)
+          {
+            /*
+              If the user originally didn't specify partitioning to be
+              used we can remove it now.
+            */
+            thd->work_part_info= NULL;
+          }
+          else
+          {
+            /*
+              Ensure that all partitions have the proper engine set-up
+            */
+            set_engine_all_partitions(thd->work_part_info,
+                                      create_info->db_type);
+          }
           *partition_changed= TRUE;
         }
       }

sql/sql_show.cc

@@ -1286,6 +1286,7 @@ store_create_info(THD *thd, TABLE_LIST *table_list, String *packet,
     uint part_syntax_len;
     char *part_syntax;
     if (table->part_info &&
+        (!table->part_info->is_auto_partitioned) &&
         ((part_syntax= generate_partition_syntax(table->part_info,
                                                   &part_syntax_len,
                                                   FALSE,FALSE))))

sql/sql_table.cc

@@ -3078,6 +3078,7 @@ bool mysql_create_table_internal(THD *thd,
     }
     file->set_auto_partitions(part_info);
     part_info->default_engine_type= create_info->db_type;
+    part_info->is_auto_partitioned= TRUE;
   }
   if (part_info)
   {
@@ -3138,8 +3139,8 @@ bool mysql_create_table_internal(THD *thd,
     }
     DBUG_PRINT("info", ("db_type = %d",
                          ha_legacy_type(part_info->default_engine_type)));
-    if (part_info->check_partition_info( &engine_type, file,
-                             create_info->max_rows))
+    if (part_info->check_partition_info(&engine_type, file,
+                                        create_info->max_rows))
       goto err;
     part_info->default_engine_type= engine_type;
 
@@ -3198,6 +3199,12 @@ bool mysql_create_table_internal(THD *thd,
     }
     else if (create_info->db_type != engine_type)
     {
+      /*
+        We come here when we don't use a partitioned handler.
+        Since we use a partitioned table it must be "native partitioned".
+        We have switched engine from defaults, most likely only specified
+        engines in partition clauses.
+      */
       delete file;
       if (!(file= get_new_handler((TABLE_SHARE*) 0, thd->mem_root, engine_type)))
       {

sql/table.cc

@@ -656,7 +656,6 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
           my_free(buff, MYF(0));
           goto err;
         }
-	next_chunk++;
       }
 #else
       if (partition_info_len)
@@ -680,7 +679,15 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
       */
       next_chunk+= 4;
     }
+    else if (share->mysql_version >= 50110)
 #endif
+    {
+      /* New auto_partitioned indicator introduced in 5.1.11 */
+#ifdef WITH_PARTITION_STORAGE_ENGINE
+      share->auto_partitioned= *next_chunk;
+#endif
+      next_chunk++;
+    }
     keyinfo= share->key_info;
     for (i= 0; i < keys; i++, keyinfo++)
     {
@@ -1471,6 +1478,8 @@ int open_table_from_share(THD *thd, TABLE_SHARE *share, const char *alias,
       Fix the partition functions and ensure they are not constant
       functions
     */
+    outparam->part_info->is_auto_partitioned= share->auto_partitioned;
+    DBUG_PRINT("info", ("autopartitioned = %u", share->auto_partitioned));
     if (fix_partition_func(thd, share->normalized_path.str, outparam,
                            is_create_table))
       goto err;

sql/table.h

@@ -214,6 +214,7 @@ typedef struct st_table_share
   */
   bool log_table;
 #ifdef WITH_PARTITION_STORAGE_ENGINE
+  bool auto_partitioned;
   const uchar *partition_info;
   uint  partition_info_len;
   const uchar *part_state;

sql/unireg.cc

@@ -130,8 +130,14 @@ bool mysql_create_frm(THD *thd, const char *file_name,
   /* str_db_type */
   create_info->extra_size= (2 + str_db_type.length +
                             2 + create_info->connect_string.length);
-  /* Partition */
-  create_info->extra_size+= 9;
+  /*
+    Partition:
+      Length of partition info = 4 byte
+      Potential NULL byte at end of partition info string = 1 byte
+      Indicator if auto-partitioned table = 1 byte
+      => Total 6 byte
+  */
+  create_info->extra_size+= 6;
 #ifdef WITH_PARTITION_STORAGE_ENGINE
   if (part_info)
   {
@@ -203,17 +209,19 @@ bool mysql_create_frm(THD *thd, const char *file_name,
 #ifdef WITH_PARTITION_STORAGE_ENGINE
   if (part_info)
   {
+    char auto_partitioned= part_info->is_auto_partitioned ? 1 : 0;
     int4store(buff, part_info->part_info_len);
     if (my_write(file, (const byte*)buff, 4, MYF_RW) ||
         my_write(file, (const byte*)part_info->part_info_string,
-                 part_info->part_info_len + 1, MYF_RW))
+                 part_info->part_info_len + 1, MYF_RW) ||
+        my_write(file, (const byte*)&auto_partitioned, 1, MYF_RW))
       goto err;
   }
   else
 #endif
   {
-    bzero(buff, 9);
-    if (my_write(file, (byte*) buff, 9, MYF_RW))
+    bzero(buff, 6);
+    if (my_write(file, (byte*) buff, 6, MYF_RW))
       goto err;
   }
   for (i= 0; i < keys; i++)