comma=# select * from _test_mu_0018 limit 1;
 _comma_flag | record_last_modified | _sq | doc_id | store |      doctype      |  foo  |  bar  |          doc_key          
-------------+----------------------+-----+--------+-------+-------------------+-------+-------+---------------------------
           0 |           1172127504 |   1 | 001    | one   | _test_multi_first | foo_1 | bar_1 | _test_multi_first|one|001
(1 row)

comma=# select * from _test_mu_0018 where 1=1 AND ( store = "one" );
ERROR:  column "one" does not exist