我要求写一个删除触发器，在删除供应商之前它将检查是否存在于其他数据库表上，如果在其他数据库表中找不到关系，则发送电子邮件给admin并设置delete flag = 1而不删除记录然后下次当同一供应商发出删除命令时，它会检查标志并删除该记录。
create TRIGGER [dbo].[trgInsteadOfDelete] ON [dbo].[AP_Vendor]
INSTEAD OF DELETE
AS
declare @apdivisionno varchar(2);
declare @vendorno varchar(7);
declare @vendorname varchar(30);
declare @addressline1 varchar(30);
declare @addressline2 varchar(30);
declare @addressline3 varchar(30);
declare @city varchar(20);
declare @state varchar(2);
declare @zipcode varchar(10);
declare @countrycode varchar(3);
declare @primarycontact varchar(10);
declare @telephoneno varchar(17);
declare @telephoneext varchar(5);
declare @faxno varchar(17);
declare @emailaddress varchar(250);
declare @urladdress varchar(50);
declare @termscode varchar(2);
declare @reference varchar(15);
declare @temporyvendor varchar(1);
declare @creditcardvendor varchar(1);
declare @holdpayment varchar(1);
declare @electronicpayment varchar(1);
declare @standardentryclass varchar(3);
declare @exemptionnoOnFile varchar(1);
declare @taxschedule varchar(9);
declare @taxclass varchar(2);
declare @accountkey varchar(9);
declare @SeparateCheck varchar(1);
declare @Comment varchar(30);
declare @Sort varchar(10);
declare @batchfax varchar(1);
declare @UsePOReceiptOfInvForVendor varchar(1);
declare @PrimaryPurchaseAddressCode varchar(4);
declare @VendorType varchar(1);
declare @Form1099 varchar(1);
declare @TaxpayerIDSocialSecurityNo varchar(9);
declare @Box1099 varchar(3);
declare @MiscBox9 varchar(1);
declare @LastPurchaseDate datetime;
declare @LastPaymentDate datetime;
declare @LastCheckNo varchar(10);
declare @LastCheckAmt decimal(14, 2);
declare @RetentionRate decimal(6, 2);
declare @AverageDaysToPay decimal(3, 0);
declare @AverageDaysOverDue decimal(3, 0);
declare @balancedue decimal(15, 2);
declare @NumberOfInvToUseInCalc decimal(7, 2);
declare @datecreated datetime;
declare @timecreated varchar(8);
declare @UserCreatedKey varchar(10);
declare @dateupdated datetime;
declare @timeupdated varchar(8);
declare @UserUpdatedKey varchar(10);
declare @UDF_LONG_NAME varchar(60);
declare @audit_Event varchar(10);
declare @audit_log varchar(100);
declare @dbname varchar(50);
declare @Deletedbname varchar(50);
declare @rowcount int;
declare @TableName varchar(50);
declare @TableFieldName varchar(50);
declare @dbcounter int;
declare @tablecounter int;
declare @cnt INT ;
DECLARE @selectVendorno varchar(75)
select @apdivisionno =i.APDivisionNo from deleted i;
select @vendorno=i.VendorNo from deleted i;
select @vendorname=i.VendorName from deleted i;
select @addressline1 =i.AddressLine1 from deleted i;
select @addressline2=i.AddressLine2 from deleted i;
select @addressline3=i.AddressLine3 from deleted i;
select @city =i.City from deleted i;
select @state=i.state from deleted i;
select @zipcode=i.zipcode from deleted i;
select @countrycode =i.countrycode from deleted i;
select @primarycontact=i.PrimaryContact from deleted i;
select @telephoneno=i.TelephoneNo from deleted i;
select @telephoneext =i.telephoneext from deleted i;
select @faxno=i.faxno from deleted i;
select @emailaddress=i.emailaddress from deleted i;
select @urladdress =i.urladdress from deleted i;
select @termscode=i.termscode from deleted i;
select @temporyvendor=i.TemporaryVendor from deleted i;
select @creditcardvendor =i.CreditCardVendor from deleted i;
select @holdpayment=i.holdpayment from deleted i;
select @electronicpayment=i.ElectronicPayment from deleted i;
select @standardentryclass=i.StandardEntryClass from deleted i;
select @exemptionnoOnFile=i.ExemptionNoOnFile from deleted i;
select @taxschedule=i.taxschedule from deleted i;
select @taxclass=i.taxclass from deleted i;
select @accountkey=i.accountkey from deleted i;
select @SeparateCheck=i.SeparateCheck from deleted i;
select @Comment=i.Comment from deleted i;
select @Sort=i.Sort from deleted i;
select @batchfax=i.batchfax from deleted i;
select @UsePOReceiptOfInvForVendor=i.UsePOReceiptOfInvForVendor from deleted i;
select @PrimaryPurchaseAddressCode=i.PrimaryPurchaseAddressCode from deleted i;
select @VendorType=i.VendorType from deleted i;
select @Form1099=i.Form1099 from deleted i;
select @TaxpayerIDSocialSecurityNo=i.TaxpayerIDSocialSecurityNo from deleted i;
select @Box1099=i.Box1099 from deleted i;
select @MiscBox9=i.MiscBox9 from deleted i;
select @LastPurchaseDate=i.LastPurchaseDate from deleted i;
select @LastPaymentDate=i.LastPaymentDate from deleted i;
select @LastCheckNo=i.LastCheckNo from deleted i;
select @LastCheckAmt=i.LastCheckAmt from deleted i;
select @RetentionRate=i.RetentionRate from deleted i;
select @AverageDaysToPay=i.AverageDaysToPay from deleted i;
select @AverageDaysOverDue=i.AverageDaysOverDue from deleted i;
select @balancedue=i.balancedue from deleted i;
select @NumberOfInvToUseInCalc=i.NumberOfInvToUseInCalc from deleted i;
select @datecreated=i.datecreated from deleted i;
select @timecreated=i.timecreated from deleted i;
select @UserCreatedKey=i.UserCreatedKey from deleted i;
select @dateupdated=i.dateupdated from deleted i;
select @timeupdated=i.timeupdated from deleted i;
select @UserUpdatedKey=i.UserUpdatedKey from deleted i;
select @UDF_LONG_NAME=i.UDF_LONG_NAME from deleted i;
select @Deletedbname= DB_NAME();
set @dbcounter =0;
set @tablecounter =0;
DECLARE @sql NVARCHAR(MAX)
DECLARE @deleteSql NVARCHAR(MAX)
select @rowcount=count(*) from [Mas_Master].[dbo].[Master_Vendor] where vendorno=@vendorno and deleteflag=1;
BEGIN
if(@rowcount<=0)
begin
DECLARE db_cursor CURSOR FOR
SELECT [dbname] FROM [Mas_Master].[dbo].[lookup_dbName]
OPEN db_cursor
FETCH NEXT FROM db_cursor INTO @dbname
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE Table_cursor CURSOR FOR
SELECT [TableName],[TableFieldName] FROM [Mas_Master].[dbo].[lookupTableName]
OPEN Table_cursor
FETCH NEXT FROM Table_cursor INTO @TableName,@TableFieldName
WHILE @@FETCH_STATUS = 0
BEGIN
if(CONCAT(@dbname, '_', @TableName)<>CONCAT(@Deletedbname, '_', 'AP_VENDOR')) /*Not Check For Same Database */
Begin
set @sql='Select @cnt=count(*) from ' +@dbname+'.dbo.'+@TableName +' where '+ @TableFieldName +'= ''' + @vendorno + '''';
EXECUTE sp_executesql @sql, N' @cnt int out', @cnt OUTPUT
INSERT INTO Mas_master.dbo.testDelete
VALUES
(
@dbname
,@TableName
,@vendorno,@sql,@cnt
)
if(@cnt>0)
Begin
SET @tablecounter = @tablecounter + 1;
break;
end
End
FETCH NEXT FROM Table_cursor INTO @TableName,@TableFieldName
End
CLOSE Table_cursor;
DEALLOCATE Table_cursor;
SET @dbcounter = @dbcounter + 1;
FETCH NEXT FROM db_cursor INTO @dbname
END
CLOSE db_cursor;
DEALLOCATE db_cursor;
/* if no match vendor found on other database then mark master table vendor delete*/
if(@tablecounter=0)
begin
UPDATE [Mas_Master].[dbo].[Master_Vendor]
SET [DeleteFlag] = 1
where vendorno=@vendorno
End
end
else /* if delete Flag = 1 then delete vendor from current database table and master vendor table */
Begin
set @deleteSql= 'DELETE FROM '+@Deletedbname+'.dbo.AP_Vendor WHERE vendorno=@vendorno';
EXECUTE sp_executesql @deleteSql, N'@vendorno nvarchar(75)', @vendorno = @vendorno
DELETE FROM Mas_Master.dbo.Master_Vendor WHERE vendorno=@vendorno
End
End
如果使用INSTEAD OF触发器我收到错误消息INSTEAD OF触发器不支持直接递归。
如果我使用After Delete Trigger，我收到错误信息
**Msg 3609, Level 16, State 1, Line 1
The transaction ended in the trigger. The batch has been aborted.**
create TRIGGER [dbo].[trgInsteadOfDelete] ON [dbo].[AP_Vendor]
after DELETE
AS
declare @apdivisionno varchar(2);
declare @vendorno varchar(7);
declare @vendorname varchar(30);
declare @addressline1 varchar(30);
declare @addressline2 varchar(30);
declare @addressline3 varchar(30);
declare @city varchar(20);
declare @state varchar(2);
declare @zipcode varchar(10);
declare @countrycode varchar(3);
declare @primarycontact varchar(10);
declare @telephoneno varchar(17);
declare @telephoneext varchar(5);
declare @faxno varchar(17);
declare @emailaddress varchar(250);
declare @urladdress varchar(50);
declare @termscode varchar(2);
declare @reference varchar(15);
declare @temporyvendor varchar(1);
declare @creditcardvendor varchar(1);
declare @holdpayment varchar(1);
declare @electronicpayment varchar(1);
declare @standardentryclass varchar(3);
declare @exemptionnoOnFile varchar(1);
declare @taxschedule varchar(9);
declare @taxclass varchar(2);
declare @accountkey varchar(9);
declare @SeparateCheck varchar(1);
declare @Comment varchar(30);
declare @Sort varchar(10);
declare @batchfax varchar(1);
declare @UsePOReceiptOfInvForVendor varchar(1);
declare @PrimaryPurchaseAddressCode varchar(4);
declare @VendorType varchar(1);
declare @Form1099 varchar(1);
declare @TaxpayerIDSocialSecurityNo varchar(9);
declare @Box1099 varchar(3);
declare @MiscBox9 varchar(1);
declare @LastPurchaseDate datetime;
declare @LastPaymentDate datetime;
declare @LastCheckNo varchar(10);
declare @LastCheckAmt decimal(14, 2);
declare @RetentionRate decimal(6, 2);
declare @AverageDaysToPay decimal(3, 0);
declare @AverageDaysOverDue decimal(3, 0);
declare @balancedue decimal(15, 2);
declare @NumberOfInvToUseInCalc decimal(7, 2);
declare @datecreated datetime;
declare @timecreated varchar(8);
declare @UserCreatedKey varchar(10);
declare @dateupdated datetime;
declare @timeupdated varchar(8);
declare @UserUpdatedKey varchar(10);
declare @UDF_LONG_NAME varchar(60);
declare @audit_Event varchar(10);
declare @audit_log varchar(100);
declare @dbname varchar(50);
declare @Deletedbname varchar(50);
declare @rowcount int;
declare @TableName varchar(50);
declare @TableFieldName varchar(50);
declare @dbcounter int;
declare @tablecounter int;
declare @cnt INT ;
DECLARE @selectVendorno varchar(75)
select @apdivisionno =i.APDivisionNo from deleted i;
select @vendorno=i.VendorNo from deleted i;
select @vendorname=i.VendorName from deleted i;
select @addressline1 =i.AddressLine1 from deleted i;
select @addressline2=i.AddressLine2 from deleted i;
select @addressline3=i.AddressLine3 from deleted i;
select @city =i.City from deleted i;
select @state=i.state from deleted i;
select @zipcode=i.zipcode from deleted i;
select @countrycode =i.countrycode from deleted i;
select @primarycontact=i.PrimaryContact from deleted i;
select @telephoneno=i.TelephoneNo from deleted i;
select @telephoneext =i.telephoneext from deleted i;
select @faxno=i.faxno from deleted i;
select @emailaddress=i.emailaddress from deleted i;
select @urladdress =i.urladdress from deleted i;
select @termscode=i.termscode from deleted i;
select @temporyvendor=i.TemporaryVendor from deleted i;
select @creditcardvendor =i.CreditCardVendor from deleted i;
select @holdpayment=i.holdpayment from deleted i;
select @electronicpayment=i.ElectronicPayment from deleted i;
select @standardentryclass=i.StandardEntryClass from deleted i;
select @exemptionnoOnFile=i.ExemptionNoOnFile from deleted i;
select @taxschedule=i.taxschedule from deleted i;
select @taxclass=i.taxclass from deleted i;
select @accountkey=i.accountkey from deleted i;
select @SeparateCheck=i.SeparateCheck from deleted i;
select @Comment=i.Comment from deleted i;
select @Sort=i.Sort from deleted i;
select @batchfax=i.batchfax from deleted i;
select @UsePOReceiptOfInvForVendor=i.UsePOReceiptOfInvForVendor from deleted i;
select @PrimaryPurchaseAddressCode=i.PrimaryPurchaseAddressCode from deleted i;
select @VendorType=i.VendorType from deleted i;
select @Form1099=i.Form1099 from deleted i;
select @TaxpayerIDSocialSecurityNo=i.TaxpayerIDSocialSecurityNo from deleted i;
select @Box1099=i.Box1099 from deleted i;
select @MiscBox9=i.MiscBox9 from deleted i;
select @LastPurchaseDate=i.LastPurchaseDate from deleted i;
select @LastPaymentDate=i.LastPaymentDate from deleted i;
select @LastCheckNo=i.LastCheckNo from deleted i;
select @LastCheckAmt=i.LastCheckAmt from deleted i;
select @RetentionRate=i.RetentionRate from deleted i;
select @AverageDaysToPay=i.AverageDaysToPay from deleted i;
select @AverageDaysOverDue=i.AverageDaysOverDue from deleted i;
select @balancedue=i.balancedue from deleted i;
select @NumberOfInvToUseInCalc=i.NumberOfInvToUseInCalc from deleted i;
select @datecreated=i.datecreated from deleted i;
select @timecreated=i.timecreated from deleted i;
select @UserCreatedKey=i.UserCreatedKey from deleted i;
select @dateupdated=i.dateupdated from deleted i;
select @timeupdated=i.timeupdated from deleted i;
select @UserUpdatedKey=i.UserUpdatedKey from deleted i;
select @UDF_LONG_NAME=i.UDF_LONG_NAME from deleted i;
select @Deletedbname= DB_NAME();
set @dbcounter =0;
set @tablecounter =0;
DECLARE @sql NVARCHAR(MAX)
DECLARE @deleteSql NVARCHAR(MAX)
select @rowcount=count(*) from [Mas_Master].[dbo].[Master_Vendor] where vendorno=@vendorno and deleteflag=1;
BEGIN
if(@rowcount<=0)
begin
Rollback;
DECLARE db_cursor CURSOR FOR
SELECT [dbname] FROM [Mas_Master].[dbo].[lookup_dbName]
OPEN db_cursor
FETCH NEXT FROM db_cursor INTO @dbname
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE Table_cursor CURSOR FOR
SELECT [TableName],[TableFieldName] FROM [Mas_Master].[dbo].[lookupTableName]
OPEN Table_cursor
FETCH NEXT FROM Table_cursor INTO @TableName,@TableFieldName
WHILE @@FETCH_STATUS = 0
BEGIN
if(CONCAT(@dbname, '_', @TableName)<>CONCAT(@Deletedbname, '_', 'AP_VENDOR')) /*Not Check For Same Database */
Begin
set @sql='Select @cnt=count(*) from ' +@dbname+'.dbo.'+@TableName +' where '+ @TableFieldName +'= ''' + @vendorno + '''';
EXECUTE sp_executesql @sql, N' @cnt int out', @cnt OUTPUT
INSERT INTO Mas_master.dbo.testDelete
VALUES
(
@dbname
,@TableName
,@vendorno,@sql,@cnt
)
if(@cnt>0)
Begin
SET @tablecounter = @tablecounter + 1;
break;
end
End
FETCH NEXT FROM Table_cursor INTO @TableName,@TableFieldName
End
CLOSE Table_cursor;
DEALLOCATE Table_cursor;
SET @dbcounter = @dbcounter + 1;
FETCH NEXT FROM db_cursor INTO @dbname
END
CLOSE db_cursor;
DEALLOCATE db_cursor;
/* if no match vendor found on other database then mark master table vendor delete*/
if(@tablecounter=0)
begin
UPDATE [Mas_Master].[dbo].[Master_Vendor]
SET [DeleteFlag] = 1
where vendorno=@vendorno
End
end
else /* if delete Flag = 1 then delete vendor from current database table and master vendor table */
Begin
set @deleteSql= 'DELETE FROM '+@Deletedbname+'.dbo.AP_Vendor WHERE vendorno=@vendorno';
EXECUTE sp_executesql @deleteSql, N'@vendorno nvarchar(75)', @vendorno = @vendorno
DELETE FROM Mas_Master.dbo.Master_Vendor WHERE vendorno=@vendorno
End
End
请帮帮我？
答案 0 :(得分：1)
您试图从触发器所基于的同一个表（AP_Vendor）中删除，这将导致相同的触发器无休止地（或递归地）触发。也许在Maser_Vendor上创建一个从AP_Vendor删除后触发的AN将起作用。
答案 1 :(得分：0)
您的触发器在末尾的同一个表中包含DELETE。通常，INSTEAD OF触发器内的操作不会再次触发相同的触发器，但由于您使用动态SQL执行此操作，因此会创建另一个执行上下文，我想这意味着触发器将再次触发。
您可以在数据库中检查嵌套触发器和递归触发器的选项：
EXEC sp_configure 'nested triggers';
EXEC sp_dboption 'YOUR_DATABASE_NAME', 'recursive triggers';
值应为1或“ON”。如果没有，你可以激活它们并再试一次
EXEC sp_configure 'nested triggers', 1;
EXEC sp_dboption 'YOUR_DATABASE_NAME', 'recursive triggers', true;