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-rw-r--r--sql/item.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/item.cc b/sql/item.cc
index 135255ee21e..33c35f8c3e0 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -1,5 +1,5 @@
/*
- Copyright (c) 2000, 2016, Oracle and/or its affiliates.
+ Copyright (c) 2000, 2018, Oracle and/or its affiliates.
Copyright (c) 2010, 2018, MariaDB Corporation
This program is free software; you can redistribute it and/or modify
@@ -9655,6 +9655,7 @@ bool Item_type_holder::join_types(THD *thd, Item *item)
if (Field::result_merge_type(fld_type) == DECIMAL_RESULT)
{
+ collation.set_numeric();
decimals= min(max(decimals, item->decimals), DECIMAL_MAX_SCALE);
int item_int_part= item->decimal_int_part();
int item_prec = max(prev_decimal_int_part, item_int_part) + decimals;