SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function cluster (children 1)
       ExpressionList (children 3)
        Identifier test_cluster_two_shards
        Function currentDatabase (children 1)
         ExpressionList
        Identifier dist_01223
   ExpressionList (children 1)
    Identifier key
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier key