# File lib/active_record/connection_adapters/postgresql_adapter.rb, line 622 def sql_for_insert(sql, pk, id_value, sequence_name, binds) unless pk _, table = extract_schema_and_table(sql.split(" ", 4)[2]) pk = primary_key(table) end sql = "#{sql} RETURNING #{quote_column_name(pk)}" if pk [sql, binds] end