SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function sipHash128ReferenceKeyed (children 1)
       ExpressionList (children 3)
        Function tuple (children 1)
         ExpressionList (children 2)
          Function toUInt64 (children 1)
           ExpressionList (children 1)
            Literal UInt64_0
          Function toUInt64 (children 1)
           ExpressionList (children 1)
            Literal UInt64_0
        Literal UInt64_1
        Literal \'test\'
