Question

这是我使用的程序........

CREATE procedure AcademicDetailsInsert
     @CandidateId int,
     @DegreeIDs varchar(25),
     @Board_Universities varchar(200),
     @YearsOfPassing varchar(50),
     @Percentages varchar(50)
As
    set NOCOUNT ON
    DECLARE @ReturnValue INT
BEGIN
    BEGIN TRY
        select @ReturnValue = 0

        IF EXISTS (SELECT ITEM AS DegID 
                   FROM [SplitString](@DegreeIDs,','))
            INSERT INTO [AcademicDetails] ([CandidateID], [DegreeId], [Board_University], [Year_Of_Passing], [Percentage])  
                SELECT  
                   @CandidateID, 
                   DegID.ITEM, Board_Uni.Item, YOfPass.ITEM,
                   Perc.ITEM
                FROM    
                   [splitString](@DegreeIDs, ',') DegID,
                   [splitString](@Board_Universities, ',') Board_Uni,
                   [splitString](@YearsOfPassing, ',') YOfPass,         
                   [splitString](@Percentages, ',') Perc
                WHERE
                   DegID.ITEM NOT IN (SELECT DegreeID
                                      FROM AcademicDetails
                                      WHERE CandidateID = @CandidateID)                 
    END TRY
    BEGIN CATCH
        SELECT    
           ERROR_NUMBER() AS ERROR_NO,
           ERROR_MESSAGE() AS ERROR_MSG,
           ERROR_LINE() AS ERROR_LINE_NO
    END CATCH    
END

这是我用来运行程序的代码......

EXEC AcademicDetailsInsert 1,'2,3','NMU,IND','2005,2008','66.33,71.65'

这是结果..

1   2   nmu 2005    66.33
1   2   nmu 2008    66.33
1   2   nmu 2005    23.65
1   2   nmu 2008    23.65
1   2   nasik   2005    66.33
1   2   nasik   2008    66.33
1   2   nasik   2005    23.65
1   2   nasik   2008    23.65
1   3   nmu 2005    66.33
1   3   nmu 2008    66.33
1   3   nmu 2005    23.65
1   3   nmu 2008    23.65
1   3   nasik   2005    66.33
1   3   nasik   2008    66.33
1   3   nasik   2005    23.65
1   3   nasik   2008    23.65

当我为单个候选人传递两个记录的详细信息时，它会给出不同的结果

但是不是两条记录，而是重复记录插入。 SplitString函数用于分割函数以分割degreeid，不同的大学名称以及传递年份和百分比。

我怎样才能避免......？

Answer 1

您已完成Cross Join，因此结果就像那样

尝试使用以下代码，希望它能正常工作

ALTER procedure AcademicDetailsInsert
@CandidateId int,
@DegreeIDs varchar(25),
@Board_Universities varchar(200),
@YearsOfPassing varchar(50),
@Percentages varchar(50)
As
set NOCOUNT ON
DECLARE @ReturnValue INT
BEGIN
BEGIN TRY
select @ReturnValue = 0
IF EXISTS  
(  
    SELECT ITEM AS DegID 
    FROM [SplitString](@DegreeIDs,',')
)
INSERT INTO [AcademicDetails]  
(     
    [CandidateID],  
    [DegreeId],
    [Board_University],
    [Year_Of_Passing],
    [Percentage] 
) 

 SELECT CandidateID,DegID,Board_Uni,YOfPass,Perc FROM 
 (
SELECT   


     @CandidateID AS CandidateID,
      SUBSTRING(@DegreeIDs,0,CHARINDEX(',',@DegreeIDs)-1) AS DegID ,
      SUBSTRING(@Board_Universities,0,CHARINDEX(',',@Board_Universities)-1) AS Board_Uni ,
      SUBSTRING(@YearsOfPassing,0,CHARINDEX(',',@YearsOfPassing)-1) AS YOfPass,
      SUBSTRING(@Percentages,0,CHARINDEX(',',@Percentages)-1)  AS Perc

      UNION
     SELECT  @CandidateID AS  CandidateID,


      SUBSTRING(@DegreeIDs,CHARINDEX(',',@DegreeIDs),Len(@DegreeIDs))  AS DegID,
      SUBSTRING(@Board_Universities,CHARINDEX(',',@Board_Universities),Len(@DegreeIDs)) AS Board_Uni,
      SUBSTRING(@YearsOfPassing,CHARINDEX(',',@YearsOfPassing),Len(@DegreeIDs)) AS YOfPass ,
      SUBSTRING(@Percentages,CHARINDEX(',',@Percentages),Len(@DegreeIDs))  AS Perc



     ) AS RandomTable


where   DegID not IN  (    SELECT DegreeID
                                FROM AcademicDetails
                                WHERE CandidateID = @CandidateID
                            )               
END TRY
BEGIN CATCH
SELECT    ERROR_NUMBER() AS ERROR_NO,
          ERROR_MESSAGE() AS ERROR_MSG,
          ERROR_LINE() AS ERROR_LINE_NO
END CATCH    
END

使用存储过程插入记录时如何避免重复...？

1 个答案: