ClickHouse/tests/queries/0_stateless/03268_empty_tuple_update.sql

DROP TABLE IF EXISTS t0;

CREATE TABLE t0 (c0 Tuple(), c1 int) ENGINE = Memory();

INSERT INTO t0 VALUES ((), 1);

ALTER TABLE t0 UPDATE c0 = (), c1 = 2 WHERE EXISTS (SELECT 1);

SELECT * FROM t0;

DROP TABLE t0;