I have some queries
SELECT @rid, EmailAddress, xMultiValue FROM Contact WHERE xMultiValue CONTAINS 'b' => PASSED (2 results)
SELECT @rid, EmailAddress, xMultiValue FROM Contact WHERE xMultiValue CONTAINS ['b'] => FAILED (no result)
SELECT @rid, EmailAddress, xMultiValue FROM Contact WHERE xMultiValue CONTAINSALL 'b' => FAILED (no result)
SELECT @rid, EmailAddress, xMultiValue FROM Contact WHERE xMultiValue CONTAINSALL ['b'] => FAILED (no result)
SELECT @rid, EmailAddress, xMultiValue FROM Contact WHERE xMultiValue CONTAINS ['b','c'] => FAILED (no result)
SELECT @rid, EmailAddress, xMultiValue FROM Contact WHERE xMultiValue CONTAINSALL ['b', 'c'] => FAILED (no result)
SELECT @rid, EmailAddress, xMultiValue FROM Contact WHERE xMultiValue CONTAINSALL ['b', 'c', 'a'] => FAILED (no result)