用于数据库抛出具体异常信息给程序，示例：
BEGIN TRY
/*
RAISERROR ('Error raised in TRY block.', -- Message text.
16, -- Severity.
1 -- State.
);
*/
DECLARE @x INT=9;
DECLARE @y INT =0;
SELECT @x/@y;
END TRY
BEGIN CATCH
DECLARE @ErrorMessage NVARCHAR(4000);
DECLARE @ErrorSeverity INT;
DECLARE @ErrorState INT;
SELECT
@ErrorMessage = ERROR_MESSAGE(),
@ErrorSeverity = ERROR_SEVERITY(),
@ErrorState = ERROR_STATE();
RAISERROR (@ErrorMessage, -- Message text.
@ErrorSeverity, -- Severity.
@ErrorState -- State.
);
END CATCH;
执行后返回信息：
来一篇参考文章：http://www.cnblogs.com/xugang/archive/2011/04/09/2010216.html
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再上一个实际工作中的SQL：
ALTER PROCEDURE [dbo].[UP_ERP_Customer_AddRelations]
(
@CusId BIGINT,
@UserId VARCHAR(100),
@OpenKey VARCHAR(100),
@DeviceId VARCHAR(100),
@IMSI VARCHAR(100),
@AppFrom VARCHAR(100),
@AppVer VARCHAR(100),
@AppType TINYINT,
@SourceId INT,
@LoginType VARCHAR(100),
@UID VARCHAR(100),
@email VARCHAR(100)
)
AS
BEGIN
SET NOCOUNT ON;
DECLARE @flag INT;
BEGIN TRY
BEGIN TRAN;
IF(OBJECT_ID('tempDB..#temp_AddRelations') IS NOT NULL)
BEGIN
DROP TABLE #temp_AddRelations;
END
CREATE TABLE #temp_AddRelations
(
CusId BIGINT,
UserId VARCHAR(100),
OpenKey VARCHAR(100),
DeviceId VARCHAR(100),
IMSI VARCHAR(100),
AppFrom VARCHAR(100),
AppVer VARCHAR(100),
AppType VARCHAR(50),
SourceId VARCHAR(10),
LoginType VARCHAR(100),
PartnerEmail VARCHAR(100),
[UID] VARCHAR(100)
)
INSERT INTO #temp_AddRelations
SELECT
CusId=@CusId,
UserId =@UserId,
OpenKey =@OpenKey,
DeviceId =@DeviceId,
IMSI =@IMSI,
AppFrom =@AppFrom,
AppVer =@AppVer,
AppType =@AppType,
SourceId =@SourceId,
LoginType =@LoginType,
PartnerEmail=@email,
[UID]=@UID
--操作表ThirdPartyUser
DECLARE @source INT
SELECT @source= CASE @LoginType WHEN 'qq' THEN 9 WHEN 'aly' THEN 1 ELSE 0 END
MERGE INTO YinTaiCustomer.dbo.ThirdPartyUser th
USING(
SELECT CusId,UserId,OpenKey,DeviceId,IMSI,AppFrom,AppVer,AppType,SourceId,LoginType,PartnerEmail,[UID]
FROM #temp_AddRelations
) tt ON tt.OpenKey=th.PartnerUserID AND tt.CusId=th.CustomerID
WHEN NOT MATCHED THEN
INSERT VALUES(
tt.CusId,
tt.OpenKey,
tt.PartnerEmail,
@source,
'','','',0,GETDATE(),0,GETDATE(),'',''
);
----操作表customerDeviceValidate
IF(@UID IS NOT NULL AND @UID<>'')
BEGIN
MERGE INTO YinTaiCustomer.dbo.CustomerDeviceValidate d
USING(
SELECT
CusId,UserId,OpenKey,DeviceId,IMSI,AppFrom,AppVer,AppType,SourceId,LoginType,PartnerEmail,[UID]
FROM #temp_AddRelations
) td ON td.[UID]=d.[UID] AND td.CusId=d.CustomerID
WHEN NOT MATCHED THEN
INSERT VALUES(
td.[UID],
td.CusId,
td.IMSI,
td.DeviceId,
td.AppFrom,
td.SourceId,
GETDATE(),
td.AppType,
td.AppVer
);
END
--操作表UnionRegister
MERGE INTO YinTaiCustomer..UnionRegister u
USING(
SELECT
CusId,UserId,OpenKey,DeviceId,IMSI,AppFrom,AppVer,AppType,SourceId,LoginType,PartnerEmail,[UID]
FROM #temp_AddRelations
) ut ON ut.PartnerEmail=u.NewAccount
WHEN NOT MATCHED THEN
INSERT VALUES
(
NULL,
ut.PartnerEmail,
NULL,
ut.SourceId,
NULL,
GETDATE(),
NULL,
NULL,
NULL,
NULL
);
SET @flag=1;
COMMIT TRAN;
END TRY
BEGIN CATCH
SET @flag=0;
ROLLBACK TRAN;
/*定义要返回的异常信息变量*/
DECLARE @ErrorMessage NVARCHAR(4000);
DECLARE @ErrorSeverity INT;
DECLARE @ErrorState INT;
/*收集可能出现的异常信息*/
SELECT
@ErrorMessage = ERROR_MESSAGE(),
@ErrorSeverity = ERROR_SEVERITY(),
@ErrorState = ERROR_STATE();
/*抛出异常*/
RAISERROR (@ErrorMessage, -- Message text.
@ErrorSeverity, -- Severity.
@ErrorState -- State.
);
END CATCH
RETURN @flag;
END
如果调用此存储过程中出现异常，就能再程序中CATCH到信息：
