SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function dateDiff (children 1)
     ExpressionList (children 3)
      Literal \'year\'
      Function today (children 1)
       ExpressionList
      Function minus (children 1)
       ExpressionList (children 2)
        Function today (children 1)
         ExpressionList
        Function toIntervalYear (children 1)
         ExpressionList (children 1)
          Literal UInt64_10