SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Asterisk
    Identifier _table
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function merge (children 1)
       ExpressionList (children 2)
        Function currentDatabase (children 1)
         ExpressionList
        Literal \'\'
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier _table
    OrderByElement (children 1)
     Function tuple (children 1)
      ExpressionList (children 1)
       Asterisk
