-- Tags: no-parallel DROP TABLE IF EXISTS test; CREATE TABLE test (x UInt8) ENGINE = MergeTree ORDER BY tuple(); INSERT INTO test (x) VALUES (1), (2), (3); ALTER TABLE test CLEAR COLUMN x; --{serverError BAD_ARGUMENTS} DROP TABLE test; DROP TABLE IF EXISTS test; CREATE TABLE test (x UInt8, y UInt8) ENGINE = MergeTree ORDER BY tuple(); INSERT INTO test (x, y) VALUES (1, 1), (2, 2), (3, 3); ALTER TABLE test CLEAR COLUMN x; ALTER TABLE test CLEAR COLUMN x IN PARTITION ''; --{serverError INVALID_PARTITION_VALUE} ALTER TABLE test CLEAR COLUMN x IN PARTITION 'asdasd'; --{serverError INVALID_PARTITION_VALUE} ALTER TABLE test CLEAR COLUMN x IN PARTITION '123'; --{serverError INVALID_PARTITION_VALUE} ALTER TABLE test CLEAR COLUMN y; --{serverError BAD_ARGUMENTS} ALTER TABLE test ADD COLUMN z String DEFAULT 'Hello'; -- y is only real column in table ALTER TABLE test CLEAR COLUMN y; --{serverError BAD_ARGUMENTS} ALTER TABLE test CLEAR COLUMN x; ALTER TABLE test CLEAR COLUMN z; INSERT INTO test (x, y, z) VALUES (1, 1, 'a'), (2, 2, 'b'), (3, 3, 'c'); ALTER TABLE test CLEAR COLUMN z; ALTER TABLE test CLEAR COLUMN x; SELECT * FROM test ORDER BY y; DROP TABLE IF EXISTS test;