CreateQuery t0 (children 3)
 Identifier t0
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration c0 (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType Nullable (children 1)
       ExpressionList (children 1)
        DataType Int
 Storage definition (children 1)
  Function Memory (children 1)
   ExpressionList
