Triggers 两个数据库之间的Sql Server触发器
我有两个数据库。其中一个名为Test,有一个名为Vehicles的表。另一个名为Test2的表名为Clients 当我在Test中的Vehicles表中插入一条新记录时,我需要更新Test2中Clients表中的NumVehicles字段Triggers 两个数据库之间的Sql Server触发器,triggers,Triggers,我有两个数据库。其中一个名为Test,有一个名为Vehicles的表。另一个名为Test2的表名为Clients 当我在Test中的Vehicles表中插入一条新记录时,我需要更新Test2中Clients表中的NumVehicles字段 这可能是使用触发器实现的吗?您需要类似 USE Test; GO CREATE TRIGGER afterVehicleInsert ON Vehicles AFTER INSERT AS BEGIN IF @@rowcount = 0 RETURN;
这可能是使用触发器实现的吗?您需要类似
USE Test;
GO
CREATE TRIGGER afterVehicleInsert ON Vehicles AFTER INSERT
AS
BEGIN
IF @@rowcount = 0 RETURN;
UPDATE Test2.[schema_name(default schema is dbo)].Clients
SET NumVehicles = NumVehicles +1 -- or whatever it should be
FROM Test2.[schema_name(default schema is dbo)].Clients c
INNER JOIN inserted i ON ([your join condition])
END;
GO
在当前数据库和另一个数据库中更新表的唯一区别在于,您需要使用[db_名称].[schema_名称].[table_名称].这是一个“远程”表,下面给出了它的工作代码
USE BioStar;
GO
CREATE TRIGGER trgAfterInsertnew ON [dbo].[TB_EVENT_LOG]
FOR INSERT
AS
declare @nDateTime int;
declare @nReaderIdn int;
declare @nEventIdn int;
declare @nUserID int;
declare @nIsLog smallint;
declare @nTNAEvent smallint;
declare @nIsUseTA smallint;
declare @nType smallint;
select @nDateTime=i.nDateTime from inserted i;
select @nDateTime=i.nReaderIdn from inserted i;
select @nEventIdn=i.nEventIdn from inserted i;
select @nUserID=i.nUserID from inserted i;
select @nIsLog=i.nIsLog from inserted i;
select @nTNAEvent=i.nTNAEvent from inserted i;
select @nIsUseTA=i.nIsUseTA from inserted i;
select @nType=i.nType from inserted i;
insert into [HRM].dbo.Device_Data
(nDateTime,nReaderIdn,nEventIdn,nUserID,nIsLog,nTNAEvent,nIsUseTA,nType)
values(@nDateTime,@nDateTime,@nEventIdn,@nUserID,@nIsLog,@nTNAEvent,@nIsUseTA,@nType);
--set @audit_action='Inserted Record -- After Insert Trigger.';
PRINT 'AFTER DELETE TRIGGER fired.'
GO