这是从存储过程中获取的。我不确定 where 语句后半部分的代码在做什么。当 @DivisionList 没有价值时如何使用它？什么是fnStringSplit？任何帮助都会很棒。谢谢
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[spAppGetSAMDataForBARCValidationAudit]
@DivisionList VARCHAR(MAX) = NULL,
@RegionList VARCHAR(MAX) = NULL,
@PlanIDList VARCHAR(MAX) = NULL,
@LastUpdateByID CHAR(7),
@SyncType CHAR(15) = NULL
AS
BEGIN
BEGIN TRY
IF (@SyncType = 'BARCtoMAAUI')
BEGIN
IF (SELECT OBJECT_ID ('tempdb..#tmpTPFMRA2')) IS NOT NULL
BEGIN
DROP TABLE #tmpTPFMRA2;
END;
SELECT DISTINCT
PlanYearID,
CPS AS BidYearCPBPS,
LastUpdateDateTime AS [date]
INTO #tmpTPFMRA2
FROM [dbo].[Trend_SavedPopulationBarcBidYearMembership] WITH (NOLOCK);
IF (SELECT OBJECT_ID ('tempdb..#tmpTPFMarketAdj2')) IS NOT NULL
BEGIN
DROP TABLE #tmpTPFMarketAdj2;
END;
SELECT DISTINCT
CPS AS BidYearCPBPS,
LastUpdateDateTime AS [date]
INTO #tmpTPFMarketAdj2
FROM [dbo].[Trend_SavedPopulationMarketAdjustment] WITH (NOLOCK);
--GET bidyear value
DECLARE @BidYear2 INT;
SELECT @BidYear2 = dbo.fnGetBidYear();
SELECT DISTINCT
pl.PlanYear,
pl.CPS,
pl.LastCPS,
ISNULL(pl.PlanInfoID, 0) PlanInfoID,
pl.Division,
pl.Region,
pl.Product,
pl.SNPType,
pl.PlanType,
ISNULL(pl.IsHidden, 0) IsHidden,
ISNULL(cw.BidYear, 0) CWBidYear,
cw.SSStateCountyCD,
cw.BaseYearCPS,
cw.CurrentYearCPS,
cw.BidYearCPS,
ISNULL(cw.ServiceAreaOptionID, 0) ServiceAreaOptionID,
cw.ServiceAreaOptionName,
cw.ServiceAreaOptionDescription,
ISNULL(cw.BidYearRenewalTypeID, 0) BidYearRenewalTypeID,
ISNULL(cw.BidYearPlanInfoID, 0) BidYearPlanInfoID,
ISNULL(cw.CurrentYearPlanInfoID, 0) CurrentYearPlanInfoID,
ISNULL(cw.IsActive, 0) IsActive,
ISNULL(tpfMRA.[date], 0) AS MRALastUpdatedTime,
ISNULL(tpfMarketAdj.[date], 0) AS MarketAdjLastUpdatedTime,
@BidYear2 AS BidYear
FROM vwPlanInfo pl WITH (NOLOCK)
LEFT JOIN
(
SELECT DISTINCT
BidYear,
SSStateCountyCD,
BaseYearCPS,
CurrentYearCPS,
BidYearCPS,
ServiceAreaOptionID,
ServiceAreaOptionName,
ServiceAreaOptionDescription,
BidYearRenewalTypeID,
BidYearPlanInfoID,
CurrentYearPlanInfoID,
IsActive
FROM vwSAMCrosswalks WITH (NOLOCK)
) cw
ON pl.PlanInfoID = cw.BidYearPlanInfoID
AND pl.PlanYear = cw.BidYear
LEFT JOIN #tmpTPFMRA2 tpfMRA WITH (NOLOCK)
ON pl.PlanYear = tpfMRA.PlanYearID
AND pl.CPS = tpfMRA.BidYearCPBPS
LEFT JOIN #tmpTPFMarketAdj2 tpfMarketAdj WITH (NOLOCK)
ON pl.CPS = tpfMarketAdj.BidYearCPBPS
WHERE pl.PlanYear >
(
SELECT MIN(PlanYear) - 3
FROM LkpPlanYear WITH (NOLOCK)
WHERE IsProjectedYear = 1
)
AND
(
(@DivisionList IS NULL)
OR pl.Division IN
(
SELECT Value FROM dbo.fnStringSplit(@DivisionList, ',')
)
)
AND
(
(@RegionList IS NULL)
OR pl.Region IN
(
SELECT Value FROM dbo.fnStringSplit(@RegionList, ',')
)
)
AND
(
(@PlanIDList IS NULL)
OR pl.PlanInfoID IN
(
SELECT DISTINCT Value FROM dbo.fnStringSplit(@PlanIDList, ',')
)
);
END;
ELSE
BEGIN
SELECT DISTINCT
PlanYearID,
CPS AS BidYearCPBPS,
LastUpdateDateTime AS [date]
INTO #tmpTPFMRA
FROM [dbo].[Trend_SavedPopulationBarcBidYearMembership] WITH (NOLOCK);
SELECT DISTINCT
CPS AS BidYearCPBPS,
LastUpdateDateTime AS [date]
INTO #tmpTPFMarketAdj
FROM [dbo].[Trend_SavedPopulationMarketAdjustment] WITH (NOLOCK);
SELECT DISTINCT
cs.PlanInfoID,
cs.ServiceAreaOptionID,
cs.BasePlanInfoID,
cs.Status,
cs.RemovedMM,
cs.MovingMM,
cs.TotalMM,
cs.SignificancePct,
cs.IsWks1BasePlan
INTO #tmpCalcSign
FROM dbo.CalcSignificance cs WITH (NOLOCK);
--GET bidyear value
DECLARE @BidYear INT;
SELECT @BidYear = dbo.fnGetBidYear();
SELECT DISTINCT
pl.PlanYear,
pl.CPS,
pl.LastCPS,
pl.PlanInfoID,
pl.Division,
pl.Region,
pl.Product,
pl.SNPType,
pl.PlanType,
ISNULL(pl.IsHidden, 0) IsHidden,
ISNULL(cw.BidYear, 0) CWBidYear,
cw.SSStateCountyCD,
cw.BaseYearCPS,
cw.CurrentYearCPS,
cw.BidYearCPS,
ISNULL(cw.ServiceAreaOptionID, 0) ServiceAreaOptionID,
cw.ServiceAreaOptionName,
cw.ServiceAreaOptionDescription,
ISNULL(cw.BidYearRenewalTypeID, 0) BidYearRenewalTypeID,
ISNULL(cw.BidYearPlanInfoID, 0) BidYearPlanInfoID,
ISNULL(cw.CurrentYearPlanInfoID, 0) CurrentYearPlanInfoID,
ISNULL(cw.IsActive, 0) IsActive,
ISNULL(rfi.PlanInfoID, 0) RollupPlanInfoID,
rfi.ServiceAreaOptionID RollupSAOptionID,
rfi.RollupName,
ISNULL(tpfMRA.[date], 0) AS MRALastUpdatedTime,
ISNULL(tpfMarketAdj.[date], 0) AS MarketAdjLastUpdatedTime,
ISNULL(tmpCalcSign.PlanInfoID, 0) CalcPlanInfoID,
ISNULL(tmpCalcSign.ServiceAreaOptionID, 0) CalcServiceAreaOptionID,
ISNULL(tmpCalcSign.BasePlanInfoID, 0) CalcBasePlanInfoID,
ISNULL(tmpCalcSign.Status, '') [Status],
ISNULL(tmpCalcSign.RemovedMM, 0.0) RemovedMM,
ISNULL(tmpCalcSign.TotalMM, 0.0) TotalMM,
ISNULL(tmpCalcSign.MovingMM, 0.0) MovingMM,
ISNULL(tmpCalcSign.SignificancePct, 0.0) SignificancePct,
ISNULL(tmpCalcSign.IsWks1BasePlan, 0) IsWks1BasePlan,
@BidYear AS BidYear
--tmpCalcSign.Status,tmpCalcSign.RemovedMM,tmpCalcSign.TotalMM,tmpCalcSign.SignificancePct,tmpCalcSign.IsWks1BasePlan
FROM vwPlanInfo pl WITH (NOLOCK)
LEFT JOIN
(
SELECT DISTINCT
BidYear,
SSStateCountyCD,
BaseYearCPS,
CurrentYearCPS,
BidYearCPS,
ServiceAreaOptionID,
ServiceAreaOptionName,
ServiceAreaOptionDescription,
BidYearRenewalTypeID,
BidYearPlanInfoID,
CurrentYearPlanInfoID,
IsActive
FROM vwSAMCrosswalks WITH (NOLOCK)
) cw
ON pl.PlanInfoID = cw.BidYearPlanInfoID
AND pl.PlanYear = cw.BidYear
LEFT JOIN
(
SELECT DISTINCT
PlanInfoID,
ServiceAreaOptionID,
RollupName
FROM vwRollupForecastInfo WITH (NOLOCK)
) rfi
ON pl.PlanInfoID = rfi.PlanInfoID
LEFT JOIN #tmpTPFMRA tpfMRA WITH (NOLOCK)
ON pl.PlanYear = tpfMRA.PlanYearID
AND pl.CPS = tpfMRA.BidYearCPBPS
LEFT JOIN #tmpTPFMarketAdj tpfMarketAdj WITH (NOLOCK)
ON pl.CPS = tpfMarketAdj.BidYearCPBPS
LEFT JOIN #tmpCalcSign tmpCalcSign WITH (NOLOCK)
ON pl.PlanInfoID = tmpCalcSign.PlanInfoID
WHERE pl.PlanYear >
(
SELECT MIN(PlanYear) - 3
FROM LkpPlanYear WITH (NOLOCK)
WHERE IsProjectedYear = 1
)
AND
(
(@DivisionList IS NULL)
OR pl.Division IN
(
SELECT Value FROM dbo.fnStringSplit(@DivisionList, ',')
)
)
AND
(
(@RegionList IS NULL)
OR pl.Region IN
(
SELECT Value FROM dbo.fnStringSplit(@RegionList, ',')
)
)
AND
(
(@PlanIDList IS NULL)
OR pl.PlanInfoID IN
(
SELECT DISTINCT Value FROM dbo.fnStringSplit(@PlanIDList, ',')
)
);
END;
END TRY
BEGIN CATCH
DECLARE @ErrorMessage NVARCHAR(4000);
DECLARE @ErrorSeverity INT;
DECLARE @ErrorState INT;
DECLARE @ErrorException NVARCHAR(4000);
DECLARE @errSrc VARCHAR(MAX) = ISNULL(ERROR_PROCEDURE(), 'SQL'),
@currentdate DATETIME = GETDATE();
SELECT @ErrorMessage = ERROR_MESSAGE(),
@ErrorSeverity = ERROR_SEVERITY(),
@ErrorState = ERROR_STATE(),
@ErrorException
= N'Line Number :' + CAST(ERROR_LINE() AS VARCHAR) + N' .Error Severity :'
+ CAST(@ErrorSeverity AS VARCHAR) + N' .Error State :' + CAST(@ErrorState AS VARCHAR);
RAISERROR(@ErrorMessage, @ErrorSeverity, @ErrorState);
---Insert into app log for logging error------------------
EXEC spAppAddLogEntry @currentdate,
'',
'ERROR',
@errSrc,
@ErrorMessage,
@ErrorException,
@LastUpdateByID;
;
END CATCH;
END;
答案 0 :(得分：0)
这些变量表示以逗号分隔的列表（一种将列表传递给查询的基本方式），然后查询仅在列表中实际存在任何内容时才进行过滤：
(
(@DivisionList IS NULL) -- either the list is empty
OR pl.Division IN
(
SELECT Value FROM dbo.fnStringSplit(@DivisionList, ',')
-- this seems to be a table function which splits the string by commas
-- the result of the function is like another view or table
)
)
所以要么列表为空，要么列表中有匹配项。
如果没有 fnStringSplit 的来源，我无法进一步说明，但它的性能可能不佳。在较新版本的 SQL Server 中，您可以改用 STRING_SPLIT，这样性能应该会更好。
更好的选择是传入一个实际的表值参数，这本质上是一个只读的表变量。
那么代码如下：
(
NOT EXISTS (SELECT 1 FROM @DivisionList) -- either the list is empty
OR pl.Division IN
(
SELECT Value FROM @DivisionList
-- no need to split
)
)