ClickHouse/dbms/tests/queries/0_stateless/00557_alter_null_storage_tables.sql

DROP TABLE IF EXISTS null_00557;

CREATE TABLE null_00557 (x UInt8) ENGINE = Null;
DESCRIBE TABLE null_00557;

ALTER TABLE null_00557 ADD COLUMN y String, MODIFY COLUMN x Int64 DEFAULT toInt64(y);
DESCRIBE TABLE null_00557;

DROP TABLE null_00557;