SELECT endsWith(s, 'ow') FROM (SELECT arrayJoin(['', 'o', 'ow', 'Hellow', '3434', 'owfffffffdHe']) AS s); SELECT endsWith(s, '') FROM (SELECT arrayJoin(['', 'h', 'hi']) AS s); SELECT endsWith('123', '3'); SELECT endsWith('123', '23'); SELECT endsWith('123', '32'); SELECT endsWith('123', ''); DROP TABLE IF EXISTS endsWith_test; CREATE TABLE endsWith_test(S1 String, S2 String, S3 FixedString(2)) ENGINE=Memory; INSERT INTO endsWith_test values ('11', '22', '33'), ('a', 'a', 'bb'), ('abc', 'bc', '23'); SELECT COUNT() FROM endsWith_test WHERE endsWith(S1, S1); SELECT COUNT() FROM endsWith_test WHERE endsWith(S1, S2); SELECT COUNT() FROM endsWith_test WHERE endsWith(S2, S3); SELECT endsWith([], 'str'); -- { serverError ILLEGAL_TYPE_OF_ARGUMENT } DROP TABLE endsWith_test;