CREATE TABLE test_alt_table(h INTEGER, i INTEGER, j TIMESTAMP TIME INDEX, PRIMARY KEY (h, i)); DESC TABLE test_alt_table; INSERT INTO test_alt_table VALUES (1, 1, 0), (2, 2, 1); -- TODO: It may result in an error if `k` is with type INTEGER. -- Error: 3001(EngineExecuteQuery), Invalid argument error: column types must match schema types, expected Int32 but found Utf8 at column index 3 ALTER TABLE test_alt_table ADD COLUMN k STRING PRIMARY KEY; DESC TABLE test_alt_table; SELECT * FROM test_alt_table; SELECT * FROM test_alt_table WHERE i = 1; -- SQLNESS ARG restart=true ALTER TABLE test_alt_table ADD COLUMN m INTEGER; DESC TABLE test_alt_table; DROP TABLE test_alt_table;