将带条件的输出添加到 SQL 中的存储过程？

Question

当我执行程序时，我填写了储备零件（机械车间）的 ID、零件数量和案例编号。

我正在尝试在某处添加一个输出，如果我 select 的零件数量 >= 库存零件数量，则会触发该输出，并输出一条消息“重新订购零件”

该脚本有效，只是它没有完成我需要的所有事情。

resid = reserve part id
antal = number of parts
sagsnummer = case number
Reservedele = spare parts


CREATE PROCEDURE sp_opret_forbrug
    @resid      int, 
    @antal      int,
    @sagsnummer int
AS 
BEGIN  
    INSERT INTO dbo.forbrug (resid, antal, sagsnummer)
    VALUES (@resid, @antal, @sagsnummer) 

    UPDATE [dbo].[Reservedele]
    SET antal = Reservedele.antal - @antal
    WHERE reservedele.resid = @resid;
END 

--exec sp_opret_forbrug

--@resid = '49',

--@antal = '2',

--@sagsnummer ='11'

--drop procedure sp_opret_forbrug

Answer 1

您可以使用 THROW

抛出错误

CREATE OR ALTER PROCEDURE sp_opret_forbrug
    @resid      int, 
    @antal      int,
    @sagsnummer int
AS 

SET XACT_ABORT ON;

BEGIN TRAN;

IF EXISTS (SELECT 1
    FROM [dbo].[Reservedele]
    WHERE reservedele.resid = @resid
      AND Reservedele.antal < @antal)
  THROW 50000, 'Not enough stock, reorder', 0;

INSERT INTO dbo.forbrug (resid, antal, sagsnummer)
    VALUES (@resid, @antal, @sagsnummer) 

UPDATE [dbo].[Reservedele]
    SET antal = Reservedele.antal - @antal
    WHERE reservedele.resid = @resid;

COMMIT;

将带条件的输出添加到 SQL 中的存储过程？

Add output with condition to a stored procedure in SQL?

sql

tsql

sql-server

stored-procedures