6

我有记录列表并创建了游标来遍历每条记录并检查某些条件并返回记录，如果它满足我的游标如下：

DECLARE @ID int
DECLARE @FromDate datetime, @ToDate datetime
DEClare @expid as int
set @expid = 839
DECLARE IDs CURSOR FOR 
select patpid,fromdate,todate from tdp_ProviderAccomodationTariffPlan where fk_patid =    162 and fk_pacid = 36

 OPEN IDs
 FETCH NEXT FROM IDs into @ID,@FromDate,@ToDate
 WHILE @@FETCH_STATUS = 0
 BEGIN
print @ID 
print @FromDate
print @ToDate

--SELECT patpid,rate,SType FROM tdp_ProviderAccomodationTariffPlan 
--WHERE ('2012-12-27' BETWEEN @FromDate AND @ToDate) and fk_patid = 162 and fk_pacid = 36

FETCH NEXT FROM IDs into @ID,@FromDate,@ToDate  

END
CLOSE IDs
DEALLOCATE IDs

在循环游标获取 id 为 '839' 的记录中，请帮我解决问题。

4

3 回答 3

6

将光标替换为 WHILE 循环以获得更快的性能，如下所示：

select identity(int,1,1) as id, patpid,fromdate,todate
INTO #temp1
from tdp_ProviderAccomodationTariffPlan
where fk_patid =    162 and fk_pacid = 36

declare @index int
declare @count int

select @count = count(*) from @temp1
set @index = 1

declare @patpid int
declare @fromdate datetime
declare @todate datetime

while @index <= @count
begin

  select @patid = patid,
         @fromdate = fromdate,
         @todate = todate
  from #temp1
  where id = @index

  -- do your logic here

  set @index= @index + 1
end

drop table #temp1
于 2013-03-05T05:51:26.727 回答
3

由于您有日期列表，因此您应该为该列表声明游标，而不是为tdp_ProviderAccomodationTariffPlan：

CREATE TABLE #TEMP_TABLE (PATPID INT, RATE ..., STYPE ...)
DECLARE @MY_DATE DATETIME, @FromDate DATETIME, @ToDate DATETIME
SET @FromDate = '...'
SET @ToDate = '...'
DECLARE THE_CURSOR CURSOR FOR 
select MY_DATE from YOUR_DATE_LIST 

 OPEN THE_CURSOR
 FETCH NEXT FROM THE_CURSOR into @MY_DATE
 WHILE @@FETCH_STATUS = 0
 BEGIN

 INSERT INTO #TEMP_TABLE
SELECT patpid,rate,SType FROM tdp_ProviderAccomodationTariffPlan 
WHERE (@MY_DATE BETWEEN @FromDate AND @ToDate) and fk_patid = 162 and fk_pacid = 36

FETCH NEXT FROM THE_CURSOR into @MY_DATE
END
CLOSE THE_CURSOR
DEALLOCATE THE_CURSOR   
select * from #temp_table
DROP TABLE #TEMP_TABLE

但我建议您避免使用游标。在 .NET 代码中执行此操作更容易、更快捷

于 2013-03-04T06:57:43.040 回答
0 
ALTER PROCEDURE [dbo].[SP_UpdateEmpStatus_IfLastAttDateMoreThan50]
(
@Msg NVARCHAR(MAX)=null OUTPUT
)
AS
BEGIN 

/**Declare Cursor**/
DECLARE @TCursor CURSOR

/**Declare Cursor**/

DECLARE @EmpCode bigint=null,@maxAttDate DATE=null,@totDays INT=null

/**Creating TempDetails Table**/
CREATE TABLE #TempDetails
(EmpCode BIGINT,maxAttDate DATE,totDays int)
/**Creating TempDetails Table**/

INSERT INTO #TempDetails(EmpCode,maxAttDate,totDays)
(
SELECT  EmpCode,MAX( LastAttDate) AS maxAttDate,(DATEDIFF(DAY,MAX( LastAttDate),GETDATE())) As totDays FROM tbl_EmpdutyDays
WHERE EmpCode IN (SELECT DISTINCT EmpCode FROM tbl_Set_EmpWiseValidations WHERE Status=1)
GROUP BY EmpCode        
)

SET @TCursor =CURSOR FOR SELECT EmpCode,maxAttDate,totDays FROM #TempDetails
OPEN @TCursor 
FETCH NEXT FROM @TCursor INTO @EmpCode,@maxAttDate,@totDays
WHILE @@FETCH_STATUS=0
BEGIN
        IF(@totDays IS NOT NULL)
        BEGIN
                IF (@totDays>=50)
                BEGIN
                    UPDATE tbl_Set_EmpRestric
                    SET [Status]=0
                    WHERE EmpCode=@EmpCode

                    UPDATE tbl_Employees
                    SET [Status]=0
                    WHERE EmpCode=@EmpCode
                END

        END  

        FETCH NEXT FROM @TCursor INTO @EmpCode,@maxAttDate,@totDays
END
SET @Msg='more Than 50 days Deactived Successfully.'
DEALLOCATE @TCursor
SELECT * FROM #TempDetails
DROP TABLE #TempDetails
END
于 2019-05-28T10:00:03.903 回答