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-rw-r--r--sql/item.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/item.cc b/sql/item.cc
index f996e962cca..5964ed388c6 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -3258,7 +3258,7 @@ bool Item_type_holder::join_types(THD *thd, Item *item)
const char *old_cs, *old_derivation;
old_cs= collation.collation->name;
old_derivation= collation.derivation_name();
- if (collation.aggregate(item->collation))
+ if (collation.aggregate(item->collation, MY_COLL_ALLOW_CONV))
{
my_error(ER_CANT_AGGREGATE_2COLLATIONS, MYF(0),
old_cs, old_derivation,