1 files changed, 7 insertions, 2 deletions
diff --git a/sql/opt_subselect.cc b/sql/opt_subselect.cc
index d706afbbe10..c7d95fdadec 100644
--- a/sql/opt_subselect.cc
+++ b/sql/opt_subselect.cc
@@ -861,7 +861,12 @@ bool subquery_types_allow_materialization(THD* thd, Item_in_subselect *in_subs)
   OPT_TRACE_TRANSFORM(thd, trace_wrapper, trace_transform,
                      in_subs->get_select_lex()->select_number,
                       "IN (SELECT)", "materialization");
-  
+
+  /*
+    The checks here must be kept in sync with the one in
+    Item_func_in::in_predicate_to_in_subs_transformer().
+  */
+
   bool all_are_fields= TRUE;
   uint32 total_key_length = 0;
   for (uint i= 0; i < elements; i++)
@@ -4610,7 +4615,7 @@ SJ_TMP_TABLE::create_sj_weedout_tmp_table(THD *thd)
     field->reset();
     /*
       Test if there is a default field value. The test for ->ptr is to skip
-      'offset' fields generated by initalize_tables
+      'offset' fields generated by initialize_tables
     */
     // Initialize the table field:
     bzero(field->ptr, field->pack_length());