text: 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;