Question

我尝试编译以下程序并得到PLS-00103错误。

create or replace PROCEDURE getFlightDetails
(ticketNumberIn IN integer, fullName OUT varchar2(60), flightNumberOut OUT integer, 
 route OUT varchar2(50), durationInHours OUT number(6,4)) 
IS
BEGIN
  select    
    pe.FirstName || ' ' || pe.LastName into fullName,
    fl.FlightNumber into flightNumberOut,
    fl.DepartureAirport || ' - ' || fl.ArrivalAirport into route,
    ROUND((fl.ArrivalDate - fl.DepartureDate)*24,1) into durationInHours
  from Purchase pu
    inner join Person pe on pe.SSN = pu.SSN
    inner join Ticket ti on ti.TicketNumber = pu.TicketNumber
    inner join Flight fl on fl.FlightNumber = ti.FlightNumber
  where pu.TicketNumber = ticketNumberIn;
END;

我做错了什么？我的意思是，我已经搜索了错误，找到的解释没有多大帮助。

Answer 1

假设您的查询只返回一行，您只需要一个INTO子句。您没有在投影中放置INTO子句（您选择的列列表）。您也无法仅在数据类型的参数上指定长度。

create or replace PROCEDURE getFlightDetails
(ticketNumberIn IN integer, fullName OUT varchar2, flightNumberOut OUT integer, 
 route OUT varchar2, durationInHours OUT number) 
IS
BEGIN
  select    
    pe.FirstName || ' ' || pe.LastName,
    fl.FlightNumber,
    fl.DepartureAirport || ' - ' || fl.ArrivalAirport,
    ROUND((fl.ArrivalDate - fl.DepartureDate)*24,1)
  into fullName, 
       flightNumberOut, 
       route, 
       durationInHours
  from Purchase pu
    inner join Person pe on pe.SSN = pu.SSN
    inner join Ticket ti on ti.TicketNumber = pu.TicketNumber
    inner join Flight fl on fl.FlightNumber = ti.FlightNumber
  where pu.TicketNumber = ticketNumberIn;
END;

与您的问题无关，我建议为您的参数提供一个命名约定，以区别于列名并使用一致。如果一个参数的名称为Out但在所有其他OUT参数上没有做同样的事情，则可能会造成混淆。就个人而言，我只使用参数<{p>的p_前缀

create or replace PROCEDURE getFlightDetails
(p_ticketNumberIn IN integer, 
 p_fullName OUT varchar2, 
 p_flightNumber OUT integer, 
 p_route OUT varchar2, 
 p_durationInHours OUT number)

如果您希望pin_和pout_区分in和out参数，那就不合理了。

PLS -00103错误存储过程Oracle SQL

1 个答案: