SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function least (children 1)
     ExpressionList (children 3)
      Function array (children 1)
       ExpressionList (children 1)
        Function array (children 1)
         ExpressionList (children 2)
          Function array (children 1)
           ExpressionList
          Function array (children 1)
           ExpressionList
      Function array (children 1)
       ExpressionList (children 1)
        Function array (children 1)
         ExpressionList (children 1)
          Function array (children 1)
           ExpressionList
      Function array (children 1)
       ExpressionList (children 2)
        Function array (children 1)
         ExpressionList (children 1)
          Function array (children 1)
           ExpressionList
        Function array (children 1)
         ExpressionList (children 1)
          Function array (children 1)
           ExpressionList