CreateQuery lc_null_int8_0 (children 3)
 Identifier lc_null_int8_0
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration val (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType Nullable (children 1)
       ExpressionList (children 1)
        DataType Int8
 Storage definition (children 1)
  Function Memory