Fix for BUG#8921: Make SHOW CREATE VIEW ignore temporary tables.

mysql-test/r/temp_table.result

@@ -97,3 +97,29 @@ Variable_name	Value
 Created_tmp_disk_tables	0
 Created_tmp_tables	2
 drop table t1;
+create temporary table t1 as select 'This is temp. table' A;
+create view t1 as select 'This is view' A;
+select * from t1;
+A
+This is temp. table
+show create table t1;
+Table	Create Table
+t1	CREATE TEMPORARY TABLE `t1` (
+  `A` varchar(19) NOT NULL default ''
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+show create view t1;
+View	Create View
+t1	CREATE ALGORITHM=UNDEFINED VIEW `test`.`t1` AS select _latin1'This is view' AS `A`
+drop view t1;
+select * from t1;
+A
+This is temp. table
+create view t1 as select 'This is view again' A;
+select * from t1;
+A
+This is temp. table
+drop table t1;
+select * from t1;
+A
+This is view again
+drop view t1;

mysql-test/t/temp_table.test

@@ -89,3 +89,18 @@ flush status;
 select * from t1 group by d;
 show status like "created_tmp%tables";
 drop table t1;
+
+# Fix for BUG#8921: Check that temporary table is ingored by view commands.
+create temporary table t1 as select 'This is temp. table' A;
+create view t1 as select 'This is view' A;
+select * from t1;
+show create table t1;
+show create view t1;
+drop view t1;
+select * from t1;
+create view t1 as select 'This is view again' A;
+select * from t1;
+drop table t1;
+select * from t1;
+drop view t1;
+

sql/sql_parse.cc

@@ -3010,6 +3010,10 @@ unsent_create_error:
     goto error;
 #else
     {
+      /* Ignore temporary tables if this is "SHOW CREATE VIEW" */
+      if (lex->only_view)
+        first_table->skip_temporary= 1;
+
       if (check_db_used(thd, all_tables) ||
 	  check_access(thd, SELECT_ACL | EXTRA_ACL, first_table->db,
 		       &first_table->grant.privilege, 0, 0))