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-rw-r--r--sql/opt_sum.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/opt_sum.cc b/sql/opt_sum.cc
index 1477d46e756..b1bb36353bf 100644
--- a/sql/opt_sum.cc
+++ b/sql/opt_sum.cc
@@ -364,7 +364,8 @@ static bool find_range_key(TABLE_REF *ref, Field* field, COND *cond)
// Save found constant
if (part->null_bit)
*key_ptr++= (byte) test(part->field->is_null());
- part->field->get_key_image((char*) key_ptr,part->length, Field::itRAW);
+ part->field->get_key_image((char*) key_ptr,part->length,
+ part->field->charset(), Field::itRAW);
key_ptr+=part->store_length - test(part->null_bit);
left_length-=part->store_length;
}