number to time comparison

mysql-test/r/func_time.result

@@ -1358,6 +1358,21 @@ Warning	1292	Truncated incorrect time value: ''
 Warning	1292	Truncated incorrect time value: ''
 DROP TABLE t1;
 End of 5.1 tests
+select time('10:10:10') > 10;
+time('10:10:10') > 10
+1
+select time('10:10:10') > 1010;
+time('10:10:10') > 1010
+1
+select time('10:10:09') > 101010;
+time('10:10:09') > 101010
+0
+select time('10:10:10') > 101010;
+time('10:10:10') > 101010
+0
+select time('10:10:11') > 101010;
+time('10:10:11') > 101010
+1
 select time(' 1 02:03:04') + interval 9 microsecond;
 time(' 1 02:03:04') + interval 9 microsecond
 26:03:04.000009

mysql-test/t/func_time.test

@@ -861,6 +861,12 @@ DROP TABLE t1;
 
 --echo End of 5.1 tests
 
+select time('10:10:10') > 10;
+select time('10:10:10') > 1010;
+select time('10:10:09') > 101010;
+select time('10:10:10') > 101010;
+select time('10:10:11') > 101010;
+
 select time(' 1 02:03:04') + interval 9 microsecond;
 select time(' 1 02:03:04') - interval 9 microsecond;
 select time('-1 02:03:04') + interval 9 microsecond;

sql/item_cmpfunc.cc

@@ -870,9 +870,14 @@ get_datetime_value(THD *thd, Item ***item_arg, Item **cache_arg,
     {
       MYSQL_TIME buf;
       int was_cut;
+      longlong res;
 
-      if (number_to_datetime(value, &buf, TIME_INVALID_DATES|TIME_FUZZY_DATE,
-                             &was_cut) == -1)
+      if (t_type == MYSQL_TIMESTAMP_TIME)
+        res= number_to_time(value, &buf, &was_cut);
+      else
+        res= number_to_datetime(value, &buf, TIME_INVALID_DATES|TIME_FUZZY_DATE,
+                                &was_cut);
+      if (res == -1)
       {
         const Lazy_string_num str(value);
         make_truncated_value_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,