【发布时间】：2013-11-13 07:13:15
【问题描述】：
桌子：
CREATE TABLE GUESTS (
GUEST_ID int IDENTITY(1,1) PRIMARY KEY,
GUEST_NAME VARCHAR(50),
GUEST_SURNAME VARCHAR(50),
ADRESS VARCHAR(100),
CITY VARCHAR(50),
CITY_CODE VARCHAR(10),
COUNTRY VARCHAR(50),
STATUS VARCHAR(20),
COMMENT nvarchar(max);
对于日志记录：
CREATE TABLE AUDIT_GUESTS (
ID int IDENTITY(1,1) PRIMARY KEY,
GUEST_ID int,
OLD_GUEST_NAME VARCHAR(50),
NEW_GUEST_NAME VARCHAR(50),
OLD_GUEST_SURNAME VARCHAR(50),
NEW_GUEST_SURNAME VARCHAR(50),
OLD_ADRESS VARCHAR(100),
NEW_ADRESS VARCHAR(100),
OLD_CITY VARCHAR(50),
NEW_CITY VARCHAR(50),
OLD_CITY_CODE VARCHAR(10),
NEW_CITY_CODE VARCHAR(10),
OLD_COUNTRY VARCHAR(50),
NEW_COUNTRY VARCHAR(50),
OLD_STATUS VARCHAR(20),
NEW_STATUS VARCHAR(20),
OLD_COMMENT nvarchar(max),
NEW_COMMENT nvarchar(max),
AUDIT_ACTION varchar(100),
AUDIT_TIMESTAMP datetime);
我想在我的GUESTS 表上创建一个触发器来记录我的AUDIT_GUESTS 表中的所有更改。如何在 SQL Server 2014 Express 中做到这一点？
我试过了：
create TRIGGER trgAfterUpdate ON [dbo].[GUESTS]
FOR UPDATE
AS
declare @GUEST_ID int;
declare @GUEST_NAME varchar(50);
declare @GUEST_SURNAME VARCHAR(50);
declare @ADRESS VARCHAR(100);
declare @CITY VARCHAR(50);
declare @CITY_CODE VARCHAR(10);
declare @COUNTRY VARCHAR(50);
declare @STATUS VARCHAR(20);
declare @COMMENT nvarchar(max);
declare @AUDIT_ACTION varchar(100);
declare @AUDIT_TIMESTAMP datetime;
select @GUEST_ID=i.GUEST_ID from inserted i;
select @GUEST_NAME=i.GUEST_NAME from inserted i;
select @GUEST_SURNAME=i.GUEST_SURNAME from inserted i;
select @ADRESS=i.ADRESS from inserted i;
select @CITY=i.CITY from inserted i;
select @CITY_CODE=i.CITY_CODE from inserted i;
select @COUNTRY=i.COUNTRY from inserted i;
select @STATUS=i.STATUS from inserted i;
select @COMMENT=i.COMMENT from inserted i;
if update(GUEST_NAME)
set @audit_action='Updated Record -- After Update Trigger.';
if update(GUEST_SURNAME)
set @audit_action='Updated Record -- After Update Trigger.';
if update(ADRESS)
set @audit_action='Updated Record -- After Update Trigger.';
if update(CITY)
set @audit_action='Updated Record -- After Update Trigger.';
if update(CITY_CODE)
set @audit_action='Updated Record -- After Update Trigger.';
if update(COUNTRY)
set @audit_action='Updated Record -- After Update Trigger.';
if update(STATUS)
set @audit_action='Updated Record -- After Update Trigger.';
if update(COMMENT)
set @audit_action='Updated Record -- After Update Trigger.';
insert into AUDIT_GUESTS
(GUEST_ID,GUEST_NAME,GUEST_SURNAME,ADRESS,CITY,CITY_CODE,COUNTRY,STATUS,COMMENT,audit_action,AUDIT_TIMESTAMP)
values(@GUEST_ID,@GUEST_NAME,@GUEST_SURNAME,@ADRESS,@CITY,@CITY_CODE,@COUNTRY,@STATUS,@COMMENT,@audit_action,getdate());
GO
工作还可以，但我希望看到旧的新值。
在 SQLite 中我有：
CREATE TRIGGER [LOG_UPDATE]
AFTER UPDATE OF [GUEST_NAME], [GUEST_SURNAME], [ADRESS], [CITY], [CITY_CODE], [COUNTRY], [STATUS], [COMMENT]
ON [GUESTS]
BEGIN
INSERT INTO GUESTS_LOG
( GUEST_ID,
NAME_OLD,NAME_NEW,
SURNAME_OLD,SURNAME_NEW,
ADRESS_OLD,ADRESS_NEW,
CITY_OLD,CITY_NEW,
CITY_CODE_OLD,CITY_CODE_NEW,
COUNTRY_OLD,COUNTRY_NEW,
STATUS_OLD,STATUS_NEW,
COMMENT_OLD,COMMENT_NEW,sqlAction,DATE_TIME)
VALUES
(OLD.GUEST_ID,
OLD.GUEST_NAME,NEW.GUEST_NAME,
OLD.GUEST_SURNAME,NEW.GUEST_SURNAME,
OLD.ADRESS,NEW.ADRESS,
OLD.CITY,NEW.CITY,
OLD.CITY_CODE,NEW.CITY_CODE,
OLD.COUNTRY,NEW.COUNTRY,
OLD.STATUS,NEW.STATUS,
OLD.COMMENT,NEW.COMMENT,'record changed',datetime('now','localtime'));
END
它工作正常。只是不知道如何将其传递给 SQL Server。刚开始学。
【问题讨论】：
-
您在触发器中的第一个也是基本的缺陷是假设
Inserted和Deleted只包含一个行 - 这是不是的情况！如果您的UPDATE语句一次影响 10 行，您的触发器将被触发 一次 并且在Inserted和Deleted中都有 10 行 - 您需要使用基于集合的方法，而不仅仅是从那些伪表中选择您认为唯一的值！ -
从 SQL Server 2016 及更高版本开始支持此功能，请参阅 docs.microsoft.com/en-us/sql/relational-databases/tables/…
标签： sql sql-server