BUG#15961: After review fixes

New error message

sql/share/errmsg.txt

@@ -5614,6 +5614,10 @@ ER_PARTITION_MAXVALUE_ERROR
 ER_PARTITION_SUBPARTITION_ERROR
         eng "Subpartitions can only be hash partitions and by key"
         swe "Subpartitioner kan bara vara hash och key partitioner"
+ER_PARTITION_SUBPART_MIX_ERROR
+        eng "Must define subpartitions on all partitions if on one partition"
+        swe "Subpartitioner måste definieras på alla partitioner om på en"
+
 ER_PARTITION_WRONG_NO_PART_ERROR
         eng "Wrong number of partitions defined, mismatch with previous setting"
         swe "Antal partitioner definierade och antal partitioner r inte lika"

sql/sql_partition.cc

@@ -704,7 +704,7 @@ bool check_partition_info(partition_info *part_info,handlerton **eng_type,
                  part_info->part_type == LIST_PARTITION))))
   {
     /* Only RANGE and LIST partitioning can be subpartitioned */
-    my_error(ER_SUBPARTITION_ERROR, MYF(0));
+    my_error(ER_PARTITION_SUBPART_MIX_ERROR, MYF(0));
     goto end;
   }
   if (unlikely(part_info->set_up_defaults_for_partitioning(file,