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-rw-r--r--activerecord/lib/active_record/relation/calculations.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb
index 6317004631..a7d2f4bd24 100644
--- a/activerecord/lib/active_record/relation/calculations.rb
+++ b/activerecord/lib/active_record/relation/calculations.rb
@@ -343,7 +343,7 @@ module ActiveRecord
def column_for(field)
field_name = field.respond_to?(:name) ? field.name.to_s : field.to_s.split('.').last
- @klass.columns.detect { |c| c.name.to_s == field_name }
+ @klass.columns_hash[field_name]
end
def type_cast_calculated_value(value, column, operation = nil)