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-rw-r--r--activerecord/lib/active_record/relation/calculations.rb2
-rw-r--r--activerecord/test/cases/calculations_test.rb1
2 files changed, 1 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb
index eaaa409636..e20cc0e76d 100644
--- a/activerecord/lib/active_record/relation/calculations.rb
+++ b/activerecord/lib/active_record/relation/calculations.rb
@@ -253,7 +253,7 @@ module ActiveRecord
select_value = operation_over_aggregate_column(column, operation, distinct)
- column_alias = select_value.alias
+ column_alias = select_value.alias || select_value.to_sql
relation.select_values = [select_value]
query_builder = relation.arel
diff --git a/activerecord/test/cases/calculations_test.rb b/activerecord/test/cases/calculations_test.rb
index ec6a319ab5..e886268a72 100644
--- a/activerecord/test/cases/calculations_test.rb
+++ b/activerecord/test/cases/calculations_test.rb
@@ -461,7 +461,6 @@ class CalculationsTest < ActiveRecord::TestCase
assert_equal 7, Company.includes(:contracts).sum(:developer_id)
end
-
def test_from_option_with_specified_index
if Edge.connection.adapter_name == 'MySQL' or Edge.connection.adapter_name == 'Mysql2'
assert_equal Edge.count(:all), Edge.from('edges USE INDEX(unique_edge_index)').count(:all)