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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 0fa5ba2e50..3ef6e7928f 100644
--- a/activerecord/lib/active_record/relation/calculations.rb
+++ b/activerecord/lib/active_record/relation/calculations.rb
@@ -245,7 +245,7 @@ module ActiveRecord
if distinct && (group_values.any? || select_values.empty? && order_values.empty?)
column_name = primary_key
end
- elsif /\s*DISTINCT[\s(]+/i.match?(column_name.to_s)
+ elsif column_name.is_a?(::String) && /\bDISTINCT[\s(]/i.match?(column_name)
distinct = nil
end
end