SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function CAST (children 1)
     ExpressionList (children 2)
      Function tuple (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 2)
          Literal UInt64_10
          Literal Array_[UInt64_11, UInt64_12]
        Function tuple (children 1)
         ExpressionList (children 2)
          Literal UInt64_13
          Literal Array_[UInt64_14, UInt64_15]
      Literal \'Map(UInt8, Array(UInt8))\'
