创建一个有insert update delete 的触发器 关于mssql
疑问:不知道mssql中的游标有没有类似oracle中的游标的type%tablename的功能请各位赐教?
1.插入操作(Insert)
Inserted表有数据,Deleted表无数据
2.删除操作(Delete)
Inserted表无数据,Deleted表有数据
3.更新操作(Update)
Inserted表有数据(新数据),Deleted表有数据(旧数据)
Create Trigger tr_PCard
On P_Card
for Insert,Update,Delete
if exists (select * from inserted) AND exists (select * from deleted) --如果UPDATE执行一下程序
begin
return
end
if exists(select * from inserted) and not exists(select * from deleted) --如果INSERT执行一下程序
begin
return
end
if exists(select * from deleted) and not exists (select * from inserted)
begin
return
end
AFCD 中的一个例子:
USE [AFCD]
GO
/****** Object: Trigger [dbo].[Pooled_Result] Script Date:
02/08/2011 09:50:06 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER TRIGGER [dbo].[Pooled_Result]
ON [dbo].[RESULT]
FOR INSERT,UPDATE
AS
--INSERTED
IF exists(select * from inserted) and not exists(select * from deleted)
BEGIN
DECLARE @testNumber INTEGER
DECLARE @sample INTEGER
DECLARE @idText VARCHAR(30)
DECLARE @temp VARCHAR(30)
DECLARE @ParSamp INTEGER
DECLARE @count INTEGER
DECLARE @compName VARCHAR(50)
DECLARE @resultValue INTEGER
DECLARE @resultText VARCHAR(200)
DECLARE @parTestNumber INTEGER
DECLARE TEST_NUM cursor for SELECT TEST_NUMBER FROM INSERTED
OPEN TEST_NUM
FETCH next FROM TEST_NUM into @testNumber
WHILE @@fetch_status = 0
BEGIN
SELECT @sample = (SELECT SAMPLE FROM TEST WHERE TEST_NUMBER = @testNumber)
IF charindex(@idText, 'P') < 9
BEGIN
RETURN
END
FETCH next FROM TEST_NUM into @testNumber
END
--INSERT INTO RESULT VALUES( '6492','Virus Isolation',2,'O','',0,0,0,'','','','AV_HI',0,'No haemagglutinating agent',0,'F','E','','2011-02-10 11:16:41.000','LENA',NULL,'','',0,0,0,'','x',0,0,'F','F',NULL,NULL,1,0,NULL,NULL,0,'',0,NULL,0,NULL,'F','')
CLOSE TEST_NUM
DEALLOCATE TEST_NUM
--SELECT PARENT ID_NUMERIC
DECLARE ID_NUM CURSOR FOR SELECT ID_NUMERIC FROM SAMPLE WHERE CHILD_SAMPLE = @sample AND IS_PARENT = 'T'
--declare one param to get the parent id_number
DECLARE @ParIdNum varchar(10)
OPEN ID_NUM
FETCH next FROM ID_NUM into @ParIdNum
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE @ParTestNum VARCHAR(10)
SELECT @ParTestNum = (SELECT test_number FROM test WHERE SAMPLE = @ParIdNum )
DECLARE RESULT_RECORD CURSOR FOR SELECT R.* FROM TEST T ,RESULT R WHERE T.TEST_NUMBER = R.TEST_NUMBER AND T.SAMPLE = @sample
DECLARE @TEST_NUMBER varchar(10)
DECLARE @NAME varchar(40)
DECLARE @ORDER_NUMBER varchar(10)
DECLARE @RESULT_TYPE varchar(1)
DECLARE @UNITS varchar(10)
DECLARE @MINIMUM float
DECLARE @MAXIMUM float
DECLARE @TYPICAL float
DECLARE @TRUE_WORD varchar(10)
DECLARE @FALSE_WORD varchar(10)
DECLARE @ALLOWED_CHARACTERS varchar(26)
DECLARE @CALCULATION varchar(10)
DECLARE @VALUE float
DECLARE @TEXT varchar(234)
DECLARE @PLACES int
DECLARE @OUT_OF_RANGE varchar(1)
DECLARE @STATUS varchar(1)
DECLARE @OLD_STATUS varchar(1)
DECLARE @ENTERED_ON datetime
DECLARE @ENTERED_BY varchar(10)
DECLARE @DATE_AUTHORISED datetime
DECLARE @AUTHORISER varchar(10)
DECLARE @GROUP_ID varchar(10)
DECLARE @SECURITY_FLAGS int
DECLARE @SIG_FIGS_NUMBER int
DECLARE @SIG_FIGS_ROUNDING int
DECLARE @SIG_FIGS_FILTER varchar(10)
DECLARE @REP_CONTROL varchar(3)
DECLARE @MINIMUM_PQL float
DECLARE @MAXIMUM_PQL float
DECLARE @LESS_THAN_PQL varchar(1)
DECLARE @GREATER_THAN_PQL varchar(1)
DECLARE @PQL_CALCULATION varchar(10)
DECLARE @FORMULA VARCHAR(2000)
DECLARE @DILUTION_FACTOR float
DECLARE @SPIKE_VALUE float
DECLARE @SURROGATE_MLP varchar(10)
DECLARE @SURROGATE_MLP_VERSION varchar(10)
DECLARE @MATRIX_NO int
DECLARE @MATRIX_NAME varchar(10)
DECLARE @COLUMN_NO int
DECLARE @COLUMN_NAME varchar(20)
DECLARE @ROW_NO int
DECLARE @ROW_NAME varchar(20)
DECLARE @HAS_INCIDENTS varchar(1)
DECLARE @INSTRUMENT_USED varchar(10)
OPEN RESULT_RECORD
FETCH next FROM RESULT_RECORD into @TEST_NUMBER,@NAME,@ORDER_NUMBER,@RESULT_TYPE,@UNITS,@MINIMUM,@MAXIMUM,@TYPICAL,@TRUE_WORD,@FALSE_WORD,@ALLOWED_CHARACTERS,@CALCULATION,@VALUE,@TEXT,@PLACES,@OUT_OF_RANGE,@STATUS,@OLD_STATUS,@ENTERED_ON,@ENTERED_BY,@DATE_AUTHORISED,@AUTHORISER,@GROUP_ID,@SECURITY_FLAGS,@SIG_FIGS_NUMBER,@SIG_FIGS_ROUNDING,@SIG_FIGS_FILTER,@REP_CONTROL,@MINIMUM_PQL,@MAXIMUM_PQL,@LESS_THAN_PQL,@GREATER_THAN_PQL,@PQL_CALCULATION,@FORMULA,@DILUTION_FACTOR,@SPIKE_VALUE,@SURROGATE_MLP,@SURROGATE_MLP_VERSION,@MATRIX_NO,@MATRIX_NAME,@COLUMN_NO,@COLUMN_NAME,@ROW_NO,@ROW_NAME,@HAS_INCIDENTS,@INSTRUMENT_USED
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE @TEST_NUM_FLAG VARCHAR(10)
DECLARE @ANALYSIS_CHILD VARCHAR(10)
DECLARE @ANALYSIS_PARENT VARCHAR(10)
SELECT @TEST_NUM_FLAG = ( SELECT TEST_NUMBER FROM RESULT WHERE TEST_NUMBER = @ParTestNum AND NAME = @NAME )
SELECT @ANALYSIS_CHILD = (SELECT ANALYSIS FROM TEST WHERE SAMPLE = @sample)
SELECT @ANALYSIS_PARENT = (SELECT ANALYSIS FROM TEST WHERE SAMPLE = @ParIdNum)
IF (@TEST_NUM_FLAG IS NULL ) AND (@ANALYSIS_CHILD = @ANALYSIS_PARENT)
BEGIN
INSERT INTO RESULT VALUES (@ParTestNum,@NAME,@ORDER_NUMBER,@RESULT_TYPE,@UNITS,@MINIMUM,@MAXIMUM,@TYPICAL,@TRUE_WORD,@FALSE_WORD,@ALLOWED_CHARACTERS,@CALCULATION,@VALUE,@TEXT,@PLACES,@OUT_OF_RANGE,@STATUS,@OLD_STATUS,@ENTERED_ON,@ENTERED_BY,@DATE_AUTHORISED,@AUTHORISER,@GROUP_ID,@SECURITY_FLAGS,@SIG_FIGS_NUMBER,@SIG_FIGS_ROUNDING,@SIG_FIGS_FILTER,@REP_CONTROL,@MINIMUM_PQL,@MAXIMUM_PQL,@LESS_THAN_PQL,@GREATER_THAN_PQL,@PQL_CALCULATION,@FORMULA,@DILUTION_FACTOR,@SPIKE_VALUE,@SURROGATE_MLP,@SURROGATE_MLP_VERSION,@MATRIX_NO,@MATRIX_NAME,@COLUMN_NO,@COLUMN_NAME,@ROW_NO,@ROW_NAME,@HAS_INCIDENTS,@INSTRUMENT_USED)
END
FETCH next FROM RESULT_RECORD into @TEST_NUMBER,@NAME,@ORDER_NUMBER,@RESULT_TYPE,@UNITS,@MINIMUM,@MAXIMUM,@TYPICAL,@TRUE_WORD,@FALSE_WORD,@ALLOWED_CHARACTERS,@CALCULATION,@VALUE,@TEXT,@PLACES,@OUT_OF_RANGE,@STATUS,@OLD_STATUS,@ENTERED_ON,@ENTERED_BY,@DATE_AUTHORISED,@AUTHORISER,@GROUP_ID,@SECURITY_FLAGS,@SIG_FIGS_NUMBER,@SIG_FIGS_ROUNDING,@SIG_FIGS_FILTER,@REP_CONTROL,@MINIMUM_PQL,@MAXIMUM_PQL,@LESS_THAN_PQL,@GREATER_THAN_PQL,@PQL_CALCULATION,@FORMULA,@DILUTION_FACTOR,@SPIKE_VALUE,@SURROGATE_MLP,@SURROGATE_MLP_VERSION,@MATRIX_NO,@MATRIX_NAME,@COLUMN_NO,@COLUMN_NAME,@ROW_NO,@ROW_NAME,@HAS_INCIDENTS,@INSTRUMENT_USED
END
CLOSE RESULT_RECORD
DEALLOCATE RESULT_RECORD
FETCH next FROM ID_NUM into @ParIdNum
END
CLOSE ID_NUM
DEALLOCATE ID_NUM
END
--UPDATED
IF exists (select * from inserted) AND exists (select * from deleted)
BEGIN
DECLARE @NEW_TEXT VARCHAR(234)
DECLARE @R_TEXT VARCHAR(234)
DECLARE @R_TEST_NUM INTEGER
DECLARE @R_NAME VARCHAR(40)
--TO GET THE OLD DATA FROM RESULT
SELECT @R_TEXT = (SELECT TEXT FROM deleted)
SELECT @R_TEST_NUM = (SELECT TEST_NUMBER FROM deleted)
SELECT @R_NAME = (SELECT NAME FROM deleted)
--TO GET THE NEW DATA FROM RESULT
SELECT @NEW_TEXT = (SELECT TEXT FROM inserted)
DECLARE @T_SAMPLE INTEGER
DECLARE @Par_id_num varchar(10)
SELECT @T_SAMPLE = (SELECT SAMPLE FROM TEST WHERE TEST_NUMBER = @R_TEST_NUM)
DECLARE ID_NUMS_C CURSOR FOR SELECT ID_NUMERIC FROM SAMPLE WHERE CHILD_SAMPLE = @T_SAMPLE AND IS_PARENT = 'T'
OPEN ID_NUMS_C
FETCH NEXT FROM ID_NUMS_C INTO @Par_id_num
WHILE @@fetch_status = 0
BEGIN
DECLARE @T_NUMER VARCHAR(10)
SELECT @T_NUMER = (SELECT TEST_NUMBER FROM TEST WHERE SAMPLE = @Par_id_num)
DECLARE @ANA_CHILD VARCHAR(10)
DECLARE @ANA_PARENT VARCHAR(10)
SELECT @ANA_CHILD = (SELECT ANALYSIS FROM TEST WHERE SAMPLE = @T_SAMPLE)
SELECT @ANA_PARENT = (SELECT ANALYSIS FROM TEST WHERE SAMPLE = @Par_id_num)
IF @ANA_CHILD = @ANA_PARENT
BEGIN
UPDATE RESULT SET TEXT = @NEW_TEXT where TEST_NUMBER = @T_NUMER AND NAME = @R_NAME
END
FETCH NEXT FROM ID_NUMS_C INTO @Par_id_num
END
CLOSE ID_NUMS_C
DEALLOCATE ID_NUMS_C
END
RETURN