Database trigger gets the sql statement that triggers the trigger

--Trigger

ALTER         TRIGGER   TR_StandardLog   ON   T_Standard  

  FOR   INSERT,DELETE,UPDATE  

AS  


 --ROWCNT

RE @ROWS INT

SET @ROWS=@@ROWCOUNT


SET NOCOUNT ON


--SQL stores the executed sql statement

CREATE TABLE #T (

EVENTTYPE VARCHAR(20),

PARAMETERS INT,

EVENTINFO VARCHAR(300)

)


--Get sql statement
DECLARE @SPID VARCHAR(20)

SET @SPID=CAST(@@SPID AS VARCHAR)

--OPTYPE

DECLARE @OPTYPE INT

SET @OPTYPE=2                                                                  NOT EXISTS (SELECT 1 FROM INSERTED) SET @OPTYPE=3 --DELETE

IF NOT EXISTS (SELECT 1 FROM DELETED) SET @OPTYPE=1 --INSERT

IF @OPTYPE=1
BEGIN
INSERT INTO T_StandardLog(SqlText,OPTYPE,CreateTime)
SELECT 'INSERT INTO TBWEIGH(WEIGHID,FID,CARDNO,STDNNO,PRONAME,PROMODEL,UNIT_FROM,UNIT_TO,TRANSPORT,DRIVER,'
' +'PACKAGE,GROSS_WEIGHT,TARE_WEIGHT,NET_WEIGHT,DEDUCT,FACT_WEIGHT,PRICE, AMOUNT,UNIT,GROSS_TIME ,'
                                                                                                                                           EATETIME)'
                       +'VALUES(:WEIGHID,'' '+isnull(cast(A.F_ID as nvarchar(18)),'null') +''','''+isnull(A.F_CardNo,'null')+''','''+isnull( A.F_StdNo,'null')+''','''+isnull(A.F_ProName,'null')+''','''+isnull(A.F_ProModel,'null')+''' ,'''+isnull(A.F_unitFrom,'null')+''','''+isnull(A.F_UnitTo,'null')+''','''
      +isnull(A.F_Transport, 'null')+''','''+isnull(A.F_Driver,'null')+''','''+isnull(A.F_Memo,'null')+''','+isnull (cast(A.F_Gross as nvarchar(30)),'null')+','+isnull(cast(A.F_Tare as nvarchar(30)),'null')+','
      +isnull(cast( A.F_Net as nvarchar(30)),'null')+','+isnull(cast(A.F_Deduct as nvarchar(30)),'null')+','+isnull(cast(A.F_Fact as nvarchar(30)),'null')+','
                                 +isnull(cast(A.F_Price as nvarchar(30)),'null')+','+isnull(cast(A.F_Money as nvarchar(30) )),'null')+','''+isnull(A.F_Unit,'null')+''','''+isnull(cast(A.F_GrossTime as nvarchar(30)),'null' )+''','''
            +isnull(cast(A.F_TareTime as nvarchar(30)),'null')+''','''+isnull(cast(A.F_NetTime as nvarchar(30)),'null')+''','''+isnull(cast(A.F_edTime as nvarchar(30)),'null')+''','''
            +isnull(A.F_opManGross,'null')+''','''+isnull(A.F_opManTare,'null')+''','''+isnull(A.F_opMan,'null')+''','''+isnull(cast(A.F_edTime as nvarchar(30)),'null')+''','''+isnull(A.F_ScaleNameGross,'null')+''','''+isnull(A.F_ScaleNameTare,'null')+''','''
            +isnull(A.F_ScaleNameNet,'null')+''',sysdate,:UserID,:Remark,'+isnull(cast(A.F_IsCancel as nvarchar(1)),'null')+',:CREATETIME'
            +');','INSERT',GETDATE()
       FROM INSERTED A
    END
  ELSE IF @OPTYPE=3 OR @OPTYPE=2
    BEGIN
       INSERT #T EXEC('DBCC INPUTBUFFER ('+@SPID+')')
       INSERT INTO T_StandardLog(SqlText,OPTYPE,CreateTime) --把执行的sql语句存储在临时表中
       SELECT T.EVENTINFO,CASE @OPTYPE WHEN 1 THEN 'INSERT' WHEN 2 THEN 'UPDATE' WHEN 3 THEN 'DELETE' ELSE ''END,GETDATE() FROM #T T   --从临时表中提取触发的sql语句
    END

GO
SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO


触发器会把数据临时存储在inserted和deleted表中，inserted 和deleted表是逻辑表，只有在触发器中才存在，触发器结束了，就会自动删除，如果是insert操作，则新添加的数据存储在inserted表中，如果是update操作，其实相当于先删除然后再插入，即在deleted表中记录原来的记录，在inserted表中记录更新后的数据，如果是deleted操作，则删除的数据被记录在deleted表中。