SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function xxHash64 (children 1)
       ExpressionList (children 1)
        Function toUInt32 (children 1)
         ExpressionList (children 1)
          Literal UInt64_0
      Function xxHash64 (children 1)
       ExpressionList (children 1)
        Literal \'\\0\\0\\0\\0\'