SET allow_suspicious_low_cardinality_types = 1; DROP TABLE IF EXISTS 02266_auto_add_nullable; CREATE TABLE 02266_auto_add_nullable ( val0 Int8 DEFAULT NULL, val1 Nullable(Int8) DEFAULT NULL, val2 UInt8 DEFAULT NUll, val3 String DEFAULT null, val4 LowCardinality(Int8) DEFAULT NULL, val5 LowCardinality(Nullable(Int8)) DEFAULT NULL ) ENGINE = MergeTree order by tuple(); DESCRIBE TABLE 02266_auto_add_nullable; DROP TABLE IF EXISTS 02266_auto_add_nullable;