BUG#18198: Fixes

ascii on varchar now allowed

mysql-test/r/partition_error.result

@@ -641,7 +641,7 @@ ERROR HY000: Partition constant is out of partition function domain
 create table t1 (v varchar(12))
 partition by range (ascii(v))
 (partition p0 values less than (10));
-ERROR HY000: This partition function is not allowed
+drop table t1;
 create table t1 (a int)
 partition by hash (rand(a));
 ERROR 42000: Constant/Random expression in (sub)partitioning function is not allowed near ')' at line 2

mysql-test/t/partition_error.test

@@ -809,10 +809,10 @@ partition by range (a)
 #
 # Bug 18198 Partitions: Verify that erroneus partition functions doesn't work
 #
--- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
 create table t1 (v varchar(12))
 partition by range (ascii(v))
 (partition p0 values less than (10));
+drop table t1;
 
 -- error 1064
 create table t1 (a int)