Merge mronstrom@bk-internal.mysql.com:/home/bk/bugs/bug19067

into  c-870ae253.1238-1-64736c10.cust.bredbandsbolaget.se:/home/pappa/bug19067

mysql-test/r/partition.result

 drop table if exists t1;
+create table t1 (a int)
+partition by range (a)
+subpartition by key (a)
+(partition p0 values less than (1));
+alter table t1 add partition (partition p1 values less than (2));
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (a) SUBPARTITION BY KEY (a) (PARTITION p0 VALUES LESS THAN (1) ENGINE = MyISAM, PARTITION p1 VALUES LESS THAN (2) ENGINE = MyISAM)
+alter table t1 reorganize partition p1 into (partition p1 values less than (3));
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (a) SUBPARTITION BY KEY (a) (PARTITION p0 VALUES LESS THAN (1) ENGINE = MyISAM, PARTITION p1 VALUES LESS THAN (3) ENGINE = MyISAM)
+drop table t1;
 CREATE TABLE t1 (
 a int not null,
 b int not null,
@@ -570,7 +587,7 @@ show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
   `a` int(11) DEFAULT NULL
-) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (a) SUBPARTITION BY HASH (a) (PARTITION p0 VALUES LESS THAN (100) )
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (a) SUBPARTITION BY HASH (a) (PARTITION p0 VALUES LESS THAN (100) ENGINE = MyISAM)
 alter table t1 add partition (partition p1 values less than (200)
 (subpartition subpart21));
 show create table t1;

mysql-test/r/partition_02myisam.result

@@ -996,7 +996,7 @@ Table	Create Table
 t1	CREATE TABLE `t1` (
   `f1` int(11) DEFAULT NULL,
   `f2` char(20) DEFAULT NULL
-) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (f1) SUBPARTITION BY HASH (f1) SUBPARTITIONS 2 (PARTITION part1 VALUES LESS THAN (100) , PARTITION part2 VALUES LESS THAN (2147483647) )
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (f1) SUBPARTITION BY HASH (f1) SUBPARTITIONS 2 (PARTITION part1 VALUES LESS THAN (100) ENGINE = MyISAM, PARTITION part2 VALUES LESS THAN (2147483647) ENGINE = MyISAM)
 SELECT COUNT(*) = 0 AS my_value FROM t1;
 my_value
 1
@@ -1098,7 +1098,7 @@ Table	Create Table
 t1	CREATE TABLE `t1` (
   `f1` int(11) DEFAULT NULL,
   `f2` char(20) DEFAULT NULL
-) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (f1) SUBPARTITION BY HASH (f1) SUBPARTITIONS 1 (PARTITION part1 VALUES LESS THAN (100) , PARTITION part2 VALUES LESS THAN (2147483647) )
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY RANGE (f1) SUBPARTITION BY HASH (f1) SUBPARTITIONS 1 (PARTITION part1 VALUES LESS THAN (100) ENGINE = MyISAM, PARTITION part2 VALUES LESS THAN (2147483647) ENGINE = MyISAM)
 SELECT COUNT(*) = 0 AS my_value FROM t1;
 my_value
 1

mysql-test/r/partition_pruning.result

@@ -596,7 +596,7 @@ f_int1
 NULL
 explain partitions select * from t1 where f_int1 is null;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	part4_p2sp0	system	NULL	NULL	NULL	NULL	1	
+1	SIMPLE	t1	part4_part4sp0	system	NULL	NULL	NULL	NULL	1	
 drop table t1;
 create table t1 (a int not null, b int not null)
 partition by list(a) 
@@ -625,16 +625,16 @@ insert into t1 values (1,1),(1,2),(1,3),(1,4),
 (2,1),(2,2),(2,3),(2,4), (NULL,1);
 explain partitions select * from t1 where a IS NULL AND (b=1 OR b=2);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	pn_p3sp0,pn_p3sp1	system	NULL	NULL	NULL	NULL	1	
+1	SIMPLE	t1	pn_pnsp0,pn_pnsp1	system	NULL	NULL	NULL	NULL	1	
 explain partitions select * from t1 where (a IS NULL or a < 1) AND (b=1 OR b=2);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	pn_p3sp0,pn_p3sp1	system	NULL	NULL	NULL	NULL	1	
+1	SIMPLE	t1	pn_pnsp0,pn_pnsp1	system	NULL	NULL	NULL	NULL	1	
 explain partitions select * from t1 where (a IS NULL or a < 2) AND (b=1 OR b=2);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p0_p0sp0,p0_p0sp1,pn_p3sp0,pn_p3sp1	ALL	NULL	NULL	NULL	NULL	5	Using where
+1	SIMPLE	t1	p0_p0sp0,p0_p0sp1,pn_pnsp0,pn_pnsp1	ALL	NULL	NULL	NULL	NULL	5	Using where
 explain partitions select * from t1 where (a IS NULL or a <= 1) AND (b=1 OR b=2);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p0_p0sp0,p0_p0sp1,pn_p3sp0,pn_p3sp1	ALL	NULL	NULL	NULL	NULL	5	Using where
+1	SIMPLE	t1	p0_p0sp0,p0_p0sp1,pn_pnsp0,pn_pnsp1	ALL	NULL	NULL	NULL	NULL	5	Using where
 drop table t1;
 create table t1 ( a int)  partition by list (MOD(a, 10))
 ( partition p0  values in (0), partition p1 values in (1),

mysql-test/r/partition_range.result

@@ -363,3 +363,27 @@ SELECT COUNT(*) FROM t1 WHERE c3 < '2000-12-31';
 COUNT(*)
 10
 DROP TABLE t1;
+create table t1 (a int)
+partition by range (MOD(a,3))
+subpartition by hash(a)
+subpartitions 2
+(partition p0 values less than (1),
+partition p1 values less than (2),
+partition p2 values less than (3),
+partition p3 values less than (4));
+ALTER TABLE t1 DROP PARTITION p3;
+ALTER TABLE t1 DROP PARTITION p1;
+ALTER TABLE t1 DROP PARTITION p2;
+drop table t1;
+create table t1 (a int)
+partition by range (MOD(a,3))
+subpartition by hash(a)
+subpartitions 2
+(partition p0 values less than (1),
+partition p1 values less than (2),
+partition p2 values less than (3),
+partition p3 values less than (4));
+ALTER TABLE t1 DROP PARTITION p0;
+ALTER TABLE t1 DROP PARTITION p1;
+ALTER TABLE t1 DROP PARTITION p2;
+drop table t1;

mysql-test/t/partition.test

@@ -9,6 +9,19 @@
 drop table if exists t1;
 --enable_warnings
 
+#
+# BUG 19067 ALTER TABLE .. ADD PARTITION for subpartitioned table crashes
+#
+create table t1 (a int)
+partition by range (a)
+subpartition by key (a)
+(partition p0 values less than (1));
+alter table t1 add partition (partition p1 values less than (2));
+show create table t1;
+alter table t1 reorganize partition p1 into (partition p1 values less than (3));
+show create table t1;
+drop table t1;
+
 #
 # Partition by key no partition defined => OK
 #
@@ -1009,4 +1022,5 @@ select auto_increment from information_schema.tables where table_name='t1';
 select * from t1;
 drop table t1;
 
+
 --echo End of 5.1 tests

mysql-test/t/partition_range.test

@@ -388,3 +388,31 @@ SELECT COUNT(*) FROM t1 WHERE c3 BETWEEN '1996-12-31' AND '2000-12-31';
 SELECT COUNT(*) FROM t1 WHERE c3 < '2000-12-31';
 DROP TABLE t1;
 
+#
+# BUG 18962 Errors in DROP PARTITION
+#
+create table t1 (a int)
+partition by range (MOD(a,3))
+subpartition by hash(a)
+subpartitions 2
+(partition p0 values less than (1),
+ partition p1 values less than (2),
+ partition p2 values less than (3),
+ partition p3 values less than (4));
+ALTER TABLE t1 DROP PARTITION p3;
+ALTER TABLE t1 DROP PARTITION p1;
+ALTER TABLE t1 DROP PARTITION p2;
+drop table t1;
+
+create table t1 (a int)
+partition by range (MOD(a,3))
+subpartition by hash(a)
+subpartitions 2
+(partition p0 values less than (1),
+ partition p1 values less than (2),
+ partition p2 values less than (3),
+ partition p3 values less than (4));
+ALTER TABLE t1 DROP PARTITION p0;
+ALTER TABLE t1 DROP PARTITION p1;
+ALTER TABLE t1 DROP PARTITION p2;
+drop table t1;

sql/partition_element.h

@@ -63,5 +63,21 @@ public:
     subpartitions.empty();
     list_val_list.empty();
   }
+  partition_element(partition_element *part_elem)
+  : partition_name(NULL), range_value(0), has_null_value(FALSE)
+  {
+    subpartitions.empty();
+    list_val_list.empty();
+
+    part_max_rows= part_elem->part_max_rows;
+    part_min_rows= part_elem->part_min_rows;
+    tablespace_name= part_elem->tablespace_name;
+    part_comment= part_elem->part_comment;
+    data_file_name= part_elem->data_file_name;
+    index_file_name= part_elem->index_file_name;
+    engine_type= part_elem->engine_type;
+    part_state= part_elem->part_state;
+    nodegroup_id= part_elem->nodegroup_id;
+  }
   ~partition_element() {}
 };

sql/partition_info.cc

@@ -91,7 +91,7 @@ partition_info *partition_info::get_clone()
 #define MAX_PART_NAME_SIZE 16
 
 char *partition_info::create_default_partition_names(uint part_no, uint no_parts, 
-                                                     uint start_no, bool is_subpart)
+                                                     uint start_no)
 {
   char *ptr= sql_calloc(no_parts*MAX_PART_NAME_SIZE);
   char *move_ptr= ptr;
@@ -102,10 +102,7 @@ char *partition_info::create_default_partition_names(uint part_no, uint no_parts
   {
     do
     {
-      if (is_subpart)
-        my_sprintf(move_ptr, (move_ptr,"p%usp%u", part_no, (start_no + i)));
-      else
-        my_sprintf(move_ptr, (move_ptr,"p%u", (start_no + i)));
+      my_sprintf(move_ptr, (move_ptr,"p%u", (start_no + i)));
       move_ptr+=MAX_PART_NAME_SIZE;
     } while (++i < no_parts);
   }
@@ -117,6 +114,35 @@ char *partition_info::create_default_partition_names(uint part_no, uint no_parts
 }
 
 
+/*
+  Create a unique name for the subpartition as part_name'sp''subpart_no'
+  SYNOPSIS
+    create_subpartition_name()
+    subpart_no                  Number of subpartition
+    part_name                   Name of partition
+  RETURN VALUES
+    >0                          A reference to the created name string
+    0                           Memory allocation error
+*/
+
+char *create_subpartition_name(uint subpart_no, const char *part_name)
+{
+  uint size_alloc= strlen(part_name) + MAX_PART_NAME_SIZE;
+  char *ptr= sql_calloc(size_alloc);
+  DBUG_ENTER("create_subpartition_name");
+
+  if (likely(ptr != NULL))
+  {
+    my_sprintf(ptr, (ptr, "%ssp%u", part_name, subpart_no));
+  }
+  else
+  {
+    mem_alloc_error(size_alloc);
+  }
+  DBUG_RETURN(ptr);
+}
+
+
 /*
   Set up all the default partitions not set-up by the user in the SQL
   statement. Also perform a number of checks that the user hasn't tried
@@ -167,8 +193,7 @@ bool partition_info::set_up_default_partitions(handler *file, ulonglong max_rows
     goto end;
   }
   if (unlikely((!(default_name= create_default_partition_names(0, no_parts,
-                                                               start_no,
-                                                               FALSE)))))
+                                                               start_no)))))
     goto end;
   i= 0;
   do
@@ -238,18 +263,17 @@ bool partition_info::set_up_default_subpartitions(handler *file,
   {
     part_elem= part_it++;
     j= 0;
-    name_ptr= create_default_partition_names(i, no_subparts, (uint)0, TRUE);
-    if (unlikely(!name_ptr))
-      goto end;
     do
     {
-      partition_element *subpart_elem= new partition_element();
+      partition_element *subpart_elem= new partition_element(part_elem);
       if (likely(subpart_elem != 0 &&
           (!part_elem->subpartitions.push_back(subpart_elem))))
       {
+        char *ptr= create_subpartition_name(j, part_elem->partition_name);
+        if (!ptr)
+          goto end;
         subpart_elem->engine_type= default_engine_type;
-        subpart_elem->partition_name= name_ptr;
-        name_ptr+= MAX_PART_NAME_SIZE;
+        subpart_elem->partition_name= ptr;
       }
       else
       {
@@ -694,6 +718,8 @@ bool partition_info::check_partition_info(handlerton **eng_type,
     do
     {
       partition_element *part_elem= part_it++;
+      if (part_elem->engine_type == NULL)
+        part_elem->engine_type= default_engine_type;
       if (!is_sub_partitioned())
       {
         if (check_table_name(part_elem->partition_name,
@@ -702,8 +728,6 @@ bool partition_info::check_partition_info(handlerton **eng_type,
           my_error(ER_WRONG_PARTITION_NAME, MYF(0));
           goto end;
         }
-        if (part_elem->engine_type == NULL)
-          part_elem->engine_type= default_engine_type;
         DBUG_PRINT("info", ("engine = %d",
                    ha_legacy_type(part_elem->engine_type)));
         engine_array[part_count++]= part_elem->engine_type;
@@ -714,18 +738,18 @@ bool partition_info::check_partition_info(handlerton **eng_type,
         List_iterator<partition_element> sub_it(part_elem->subpartitions);
         do
         {
-          part_elem= sub_it++;
-          if (check_table_name(part_elem->partition_name,
-                               strlen(part_elem->partition_name)))
+          partition_element *sub_elem= sub_it++;
+          if (check_table_name(sub_elem->partition_name,
+                               strlen(sub_elem->partition_name)))
           {
             my_error(ER_WRONG_PARTITION_NAME, MYF(0));
             goto end;
           }
-          if (part_elem->engine_type == NULL)
-            part_elem->engine_type= default_engine_type;
+          if (sub_elem->engine_type == NULL)
+            sub_elem->engine_type= default_engine_type;
           DBUG_PRINT("info", ("engine = %u",
-                     ha_legacy_type(part_elem->engine_type)));
-          engine_array[part_count++]= part_elem->engine_type;
+                     ha_legacy_type(sub_elem->engine_type)));
+          engine_array[part_count++]= sub_elem->engine_type;
         } while (++j < no_subparts);
       }
     } while (++i < no_parts);

sql/partition_info.h

@@ -256,7 +256,7 @@ private:
                                  uint start_no);
   bool set_up_default_subpartitions(handler *file, ulonglong max_rows);
   char *create_default_partition_names(uint part_no, uint no_parts,
-                                       uint start_no, bool is_subpart);
+                                       uint start_no);
   bool has_unique_name(partition_element *element);
 };
 

sql/sql_partition.cc

@@ -1754,7 +1754,6 @@ end:
     buf_length                 A pointer to the returned buffer length
     use_sql_alloc              Allocate buffer from sql_alloc if true
                                otherwise use my_malloc
-    write_all                  Write everything, also default values
 
   RETURN VALUES
     NULL error
@@ -1782,8 +1781,7 @@ end:
 
 char *generate_partition_syntax(partition_info *part_info,
                                 uint *buf_length,
-                                bool use_sql_alloc,
-                                bool write_all)
+                                bool use_sql_alloc)
 {
   uint i,j, tot_no_parts, no_subparts, no_parts;
   partition_element *part_elem;
@@ -1869,7 +1867,7 @@ char *generate_partition_syntax(partition_info *part_info,
   tot_no_parts= no_parts + no_temp_parts;
   no_subparts= part_info->no_subparts;
 
-  if (write_all || (!part_info->use_default_partitions))
+  if (!part_info->use_default_partitions)
   {
     err+= add_begin_parenthesis(fptr);
     i= 0;
@@ -1930,10 +1928,11 @@ char *generate_partition_syntax(partition_info *part_info,
         err+= add_name_string(fptr, part_elem->partition_name);
         err+= add_space(fptr);
         err+= add_partition_values(fptr, part_info, part_elem);
-        if (!part_info->is_sub_partitioned())
+        if (!part_info->is_sub_partitioned() ||
+            part_info->use_default_subpartitions)
           err+= add_partition_options(fptr, part_elem);
         if (part_info->is_sub_partitioned() &&
-            (write_all || (!part_info->use_default_subpartitions)))
+            (!part_info->use_default_subpartitions))
         {
           err+= add_space(fptr);
           err+= add_begin_parenthesis(fptr);
@@ -3949,6 +3948,7 @@ uint prep_alter_part_table(THD *thd, TABLE *table, ALTER_INFO *alter_info,
         DBUG_RETURN(TRUE);
       }
       alt_part_info->part_type= tab_part_info->part_type;
+      alt_part_info->subpart_type= tab_part_info->subpart_type;
       if (alt_part_info->set_up_defaults_for_partitioning(table->file,
                                                           ULL(0), 
                                                           tab_part_info->no_parts))
@@ -4377,6 +4377,15 @@ state of p1.
         my_error(ER_TOO_MANY_PARTITIONS_ERROR, MYF(0));
         DBUG_RETURN(TRUE);
       }
+      alt_part_info->part_type= tab_part_info->part_type;
+      alt_part_info->subpart_type= tab_part_info->subpart_type;
+      DBUG_ASSERT(!alt_part_info->use_default_partitions);
+      if (alt_part_info->set_up_defaults_for_partitioning(table->file,
+                                                          ULL(0), 
+                                                          0))
+      {
+        DBUG_RETURN(TRUE);
+      }
 /*
 Online handling:
 REORGANIZE PARTITION:
@@ -4513,7 +4522,7 @@ the generated partition syntax in a correct manner.
         tab_part_info->use_default_no_subpartitions= FALSE;
       }
       if (tab_part_info->check_partition_info((handlerton**)NULL,
-                               table->file, ULL(0)))
+                                              table->file, ULL(0)))
       {
         DBUG_RETURN(TRUE);
       }

sql/sql_partition.h

@@ -69,8 +69,7 @@ bool check_partition_info(partition_info *part_info,handlerton **eng_type,
 bool fix_partition_func(THD *thd, const char *name, TABLE *table,
                         bool create_table_ind);
 char *generate_partition_syntax(partition_info *part_info,
-                                uint *buf_length, bool use_sql_alloc,
-                                bool write_all);
+                                uint *buf_length, bool use_sql_alloc);
 bool partition_key_modified(TABLE *table, List<Item> &fields);
 void get_partition_set(const TABLE *table, byte *buf, const uint index,
                        const key_range *key_spec,

sql/sql_show.cc

@@ -1276,7 +1276,7 @@ store_create_info(THD *thd, TABLE_LIST *table_list, String *packet,
     if (table->part_info &&
         ((part_syntax= generate_partition_syntax(table->part_info,
                                                   &part_syntax_len,
-                                                  FALSE,FALSE))))
+                                                  FALSE))))
     {
        packet->append(part_syntax, part_syntax_len);
        my_free(part_syntax, MYF(0));

sql/sql_table.cc

@@ -323,7 +323,7 @@ bool mysql_write_frm(ALTER_PARTITION_PARAM_TYPE *lpt, uint flags)
       part_info->part_state_len= 0;
       if (!(part_syntax_buf= generate_partition_syntax(part_info,
                                                        &syntax_len,
-                                                       TRUE, FALSE)))
+                                                       TRUE)))
       {
         DBUG_RETURN(TRUE);
       }
@@ -2159,7 +2159,7 @@ bool mysql_create_table_internal(THD *thd,
     */
     if (!(part_syntax_buf= generate_partition_syntax(part_info,
                                                      &syntax_len,
-                                                     TRUE, FALSE)))
+                                                     TRUE)))
       goto err;
     part_info->part_info_string= part_syntax_buf;
     part_info->part_info_len= syntax_len;