BUG#18752: Added test case for SHOW CREATE TABLE not showing NULL values...

BUG#18752: Added test case for SHOW CREATE TABLE not showing NULL values properly in bug already fixed
Added new test case for bug 18752 (bug already fixed by previous patch)

mysql-test/r/partition.result

@@ -839,4 +839,13 @@ SHOW TABLE STATUS;
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
 t1	MyISAM	10	Dynamic	0	0	0	0	0	0	NULL	NULL	NULL	NULL	latin1_swedish_ci	NULL	partitioned	
 DROP TABLE t1;
+CREATE TABLE t1 (a int)
+PARTITION BY LIST (a)
+(PARTITION p0 VALUES IN (NULL));
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 PARTITION BY LIST (a) (PARTITION p0 VALUES IN (NULL) ENGINE = MyISAM)
+DROP TABLE t1;
 End of 5.1 tests

mysql-test/t/partition.test

@@ -956,4 +956,13 @@ PARTITION p2 VALUES LESS THAN (30) ENGINE = MyISAM);
 SHOW TABLE STATUS;
 DROP TABLE t1;
 
+#
+# BUG 18752 SHOW CREATE TABLE doesn't show NULL value in SHOW CREATE TABLE
+#
+CREATE TABLE t1 (a int)
+PARTITION BY LIST (a)
+(PARTITION p0 VALUES IN (NULL));
+SHOW CREATE TABLE t1;
+DROP TABLE t1;
+
 --echo End of 5.1 tests