merge into mysql-5.1-bugteam

sql/ha_partition.cc:
  Bug#49477, added safety that a partitioned table cannot be
  temporary.

mysql-test/r/partition_error.result

 drop table if exists t1;
 #
+# Bug#49477: Assertion `0' failed in ha_partition.cc:5530
+# with temporary table and partitions
+#
+CREATE TABLE t1 (a INT) PARTITION BY HASH(a);
+CREATE TEMPORARY TABLE tmp_t1 LIKE t1;
+ERROR HY000: Cannot create temporary table with partitions
+DROP TABLE t1;
+#
 # Bug#50392: insert_id is not reset for partitioned tables
 #            auto_increment on duplicate entry
 CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY);

mysql-test/t/partition_error.test

@@ -8,6 +8,15 @@
 drop table if exists t1;
 --enable_warnings
  
+--echo #
+--echo # Bug#49477: Assertion `0' failed in ha_partition.cc:5530
+--echo # with temporary table and partitions
+--echo #
+CREATE TABLE t1 (a INT) PARTITION BY HASH(a);
+--error ER_PARTITION_NO_TEMPORARY
+CREATE TEMPORARY TABLE tmp_t1 LIKE t1;
+DROP TABLE t1;
+
 --echo #
 --echo # Bug#50392: insert_id is not reset for partitioned tables
 --echo #            auto_increment on duplicate entry

sql/ha_partition.cc

@@ -88,7 +88,9 @@ static int partition_initialize(void *p)
   partition_hton->create= partition_create_handler;
   partition_hton->partition_flags= partition_flags;
   partition_hton->alter_table_flags= alter_table_flags;
-  partition_hton->flags= HTON_NOT_USER_SELECTABLE | HTON_HIDDEN;
+  partition_hton->flags= HTON_NOT_USER_SELECTABLE |
+                         HTON_HIDDEN |
+                         HTON_TEMPORARY_NOT_SUPPORTED;
 
   return 0;
 }
@@ -1837,6 +1839,13 @@ uint ha_partition::del_ren_cre_table(const char *from,
   handler **file, **abort_file;
   DBUG_ENTER("del_ren_cre_table()");
 
+  /* Not allowed to create temporary partitioned tables */
+  if (create_info && create_info->options & HA_LEX_CREATE_TMP_TABLE)
+  {
+    my_error(ER_PARTITION_NO_TEMPORARY, MYF(0));
+    DBUG_RETURN(TRUE);
+  }
+
   if (get_from_handler_file(from, ha_thd()->mem_root))
     DBUG_RETURN(TRUE);
   DBUG_ASSERT(m_file_buffer);

sql/sql_table.cc

@@ -5288,6 +5288,11 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table,
   */
   if (create_info->options & HA_LEX_CREATE_TMP_TABLE)
   {
+    if (src_table->table->file->ht == partition_hton)
+    {
+      my_error(ER_PARTITION_NO_TEMPORARY, MYF(0));
+      goto err;
+    }
     if (find_temporary_table(thd, db, table_name))
       goto table_exists;
     dst_path_length= build_tmptable_filename(thd, dst_path, sizeof(dst_path));
@@ -5352,14 +5357,15 @@ bool mysql_create_like_table(THD* thd, TABLE_LIST* table, TABLE_LIST* src_table,
   /*
     For partitioned tables we need to copy the .par file as well since
     it is used in open_table_def to even be able to create a new handler.
-    There is no way to find out here if the original table is a
-    partitioned table so we copy the file and ignore any errors.
   */
+  if (src_table->table->file->ht == partition_hton)
+  {
     fn_format(tmp_path, dst_path, reg_ext, ".par", MYF(MY_REPLACE_EXT));
     strmov(dst_path, tmp_path);
     fn_format(tmp_path, src_path, reg_ext, ".par", MYF(MY_REPLACE_EXT));
     strmov(src_path, tmp_path);
     my_copy(src_path, dst_path, MYF(MY_DONT_OVERWRITE_FILE));
+  }
 #endif
 
   DBUG_EXECUTE_IF("sleep_create_like_before_ha_create", my_sleep(6000000););