Bug #17210 Create temp table call to ha_ndbcluster::create_handler_files caused core

  - do not try to create ndb temp tables even if default storage is ndb

mysql-test/r/ndb_temporary.result

+DROP TABLE IF EXISTS t1;
+create temporary table t1 (a int key) engine=ndb;
+ERROR HY000: Table storage engine 'ndbcluster' does not support the create option 'TEMPORARY'
+create temporary table t1 (a int key) engine=myisam;
+alter table t1 engine=ndb;
+ERROR HY000: Table storage engine 'ndbcluster' does not support the create option 'TEMPORARY'
+drop table t1;
+SET SESSION storage_engine=NDBCLUSTER;
+create table t1 (a int key);
+select engine from information_schema.tables where table_name = 't1';
+engine
+NDBCLUSTER
+drop table t1;
+create temporary table t1 (a int key);
+show create table t1;
+Table	Create Table
+t1	CREATE TEMPORARY TABLE `t1` (
+  `a` int(11) NOT NULL,
+  PRIMARY KEY  (`a`)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;

mysql-test/t/ndb_temporary.test

+-- source include/have_ndb.inc
+-- source include/not_embedded.inc
+
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
+#
+# creating a temporary table with engine=ndb should give an error
+#
+--error ER_ILLEGAL_HA_CREATE_OPTION
+create temporary table t1 (a int key) engine=ndb;
+
+
+#
+# alter temporary table to engine=ndb should give an error
+#
+create temporary table t1 (a int key) engine=myisam;
+--error ER_ILLEGAL_HA_CREATE_OPTION
+alter table t1 engine=ndb;
+drop table t1;
+
+
+#
+# if default storage engine=ndb, temporary tables
+# without explicit engine= should be created as myisam
+#
+SET SESSION storage_engine=NDBCLUSTER;
+create table t1 (a int key);
+
+# verify that we have a ndb table
+select engine from information_schema.tables where table_name = 't1';
+drop table t1;
+
+# verify that we have a myisam table
+create temporary table t1 (a int key);
+show create table t1;
+drop table t1;

sql/ha_ndbcluster.cc

@@ -5848,7 +5848,7 @@ static bool ndbcluster_init()
 #ifdef HAVE_NDB_BINLOG
     ndbcluster_binlog_init_handlerton();
 #endif
-    h.flags=            HTON_NO_FLAGS;
+    h.flags=            HTON_TEMPORARY_NOT_SUPPORTED;
   }
 
   // Set connectstring if specified

sql/handler.h

@@ -604,6 +604,7 @@ struct show_table_alias_st {
 #define HTON_HIDDEN                  (1 << 3) //Engine does not appear in lists
 #define HTON_FLUSH_AFTER_RENAME      (1 << 4)
 #define HTON_NOT_USER_SELECTABLE     (1 << 5)
+#define HTON_TEMPORARY_NOT_SUPPORTED (1 << 6) //Having temporary tables not supported
 
 typedef struct st_thd_trans
 {

sql/share/errmsg.txt

@@ -5806,3 +5806,5 @@ ER_COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE
         eng "Column count of mysql.%s is wrong. Expected %d, found %d. Created with MySQL %d, now running %d. Please use scripts/mysql_fix_privilege_tables"
 ER_TABLE_NEEDS_UPGRADE
          eng "Table upgrade required. Please do \"REPAIR TABLE `%-.32s`\" to fix it!"
+ER_ILLEGAL_HA_CREATE_OPTION
+        eng "Table storage engine '%-.64s' does not support the create option '%.64s'"

sql/sql_table.cc

@@ -42,7 +42,7 @@ static int copy_data_between_tables(TABLE *from,TABLE *to,
 				    ha_rows *copied,ha_rows *deleted);
 static bool prepare_blob_field(THD *thd, create_field *sql_field);
 static bool check_engine(THD *thd, const char *table_name,
-                         handlerton **new_engine);                             
+                         HA_CREATE_INFO *create_info);                             
 static int mysql_prepare_table(THD *thd, HA_CREATE_INFO *create_info,
                                List<create_field> *fields,
                                List<Key> *keys, bool tmp_table,
@@ -2021,7 +2021,7 @@ bool mysql_create_table_internal(THD *thd,
                MYF(0));
     DBUG_RETURN(TRUE);
   }
-  if (check_engine(thd, table_name, &create_info->db_type))
+  if (check_engine(thd, table_name, create_info))
     DBUG_RETURN(TRUE);
   db_options= create_info->table_options;
   if (create_info->row_type == ROW_TYPE_DYNAMIC)
@@ -2148,22 +2148,6 @@ bool mysql_create_table_internal(THD *thd,
   }
 #endif
 
-#ifdef NOT_USED
-  /*
-    if there is a technical reason for a handler not to have support
-    for temp. tables this code can be re-enabled.
-    Otherwise, if a handler author has a wish to prohibit usage of
-    temporary tables for his handler he should implement a check in
-    ::create() method
-  */
-  if ((create_info->options & HA_LEX_CREATE_TMP_TABLE) &&
-      (file->table_flags() & HA_NO_TEMP_TABLES))
-  {
-    my_error(ER_ILLEGAL_HA, MYF(0), table_name);
-    goto err;
-  }
-#endif
-
   set_table_default_charset(thd, create_info, (char*) db);
 
   if (mysql_prepare_table(thd, create_info, &fields,
@@ -4010,7 +3994,7 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
     DBUG_RETURN(TRUE);
   }
 #endif
-  if (check_engine(thd, new_name, &create_info->db_type))
+  if (check_engine(thd, new_name, create_info))
     DBUG_RETURN(TRUE);
   new_db_type= create_info->db_type;
   if (create_info->row_type == ROW_TYPE_NOT_USED)
@@ -5435,8 +5419,9 @@ bool mysql_checksum_table(THD *thd, TABLE_LIST *tables, HA_CHECK_OPT *check_opt)
 }
 
 static bool check_engine(THD *thd, const char *table_name,
-                         handlerton **new_engine)
+                         HA_CREATE_INFO *create_info)
 {
+  handlerton **new_engine= &create_info->db_type;
   handlerton *req_engine= *new_engine;
   bool no_substitution=
         test(thd->variables.sql_mode & MODE_NO_ENGINE_SUBSTITUTION);
@@ -5452,5 +5437,16 @@ static bool check_engine(THD *thd, const char *table_name,
                        ha_resolve_storage_engine_name(*new_engine),
                        table_name);
   }
+  if (create_info->options & HA_LEX_CREATE_TMP_TABLE &&
+      ha_check_storage_engine_flag(*new_engine, HTON_TEMPORARY_NOT_SUPPORTED))
+  {
+    if (create_info->used_fields & HA_CREATE_USED_ENGINE)
+    {
+      my_error(ER_ILLEGAL_HA_CREATE_OPTION, MYF(0), (*new_engine)->name, "TEMPORARY");
+      *new_engine= 0;
+      return TRUE;
+    }
+    *new_engine= &myisam_hton;
+  }
   return FALSE;
 }