SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 3)
    Function toDecimal32 (alias x) (children 1)
     ExpressionList (children 2)
      Literal \'12345678\'
      Literal UInt64_1
    Function toDecimal32 (children 1)
     ExpressionList (children 2)
      Identifier x
      Literal UInt64_2
    Function toDecimal32 (children 1)
     ExpressionList (children 2)
      Function toDecimal32 (children 1)
       ExpressionList (children 2)
        Literal \'12345678\'
        Literal UInt64_1
      Literal UInt64_2