SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function toDecimal128 (alias x) (children 1)
     ExpressionList (children 2)
      Literal \'9223372036854775809\'
      Literal UInt64_6
    Function toInt64 (children 1)
     ExpressionList (children 1)
      Function negate (children 1)
       ExpressionList (children 1)
        Identifier x