MySQL存儲過程重復問題

Question

我希望有人能幫幫忙。 我創建了此存儲過程以從不同的表中提取一些信息，而當我對其進行調整時，我得到了很多重復項，我想知道是否存在一種對它進行排序的方法？

use ICA
if exists(
    select *
    from INFORMATION_SCHEMA.ROUTINES
    where SPECIFIC_SCHEMA = N'ICASchema'
    and SPECIFIC_NAME = N'candidateOffer'
    )
    drop procedure ICASchema.candidateOffer
go

create procedure ICASchema.candidateOffer @candidateID INT
    as
begin

select c.CandidateID,c.CandidateName, ca.CourseID, co.CourseName, o.OfferID, ot.OfferTypePoints
    from [ICASchema].[tblCandidate] c 
    join [ICASchema].[tblCandidateOffer] o on c.CandidateID = o.CandidateID
    join [ICASchema].[tblOffer] ot on o.offerID = ot.OfferType
    join [ICASchema].[tblCandidateApplication] ca on ca.CourseID = ca.CourseID
    join [ICASchema].[tblCourse] co on co.CourseName = co.CourseName
    where c.CandidateID = @candidateID
    --ORDER BY co.CourseName
    GROUP BY  co.CourseName, c.CandidateID,c.CandidateName, ca.CourseID, o.OfferID, ot.OfferTypePoints
end
go

謝謝

格雷厄姆

Answer 1

嘗試這個：

select * from (select distinct c.CandidateID,c.CandidateName, ca.CourseID, co.CourseName, o.OfferID, ot.OfferTypePoints
    from [ICASchema].[tblCandidate] c 
    join [ICASchema].[tblCandidateOffer] o on c.CandidateID = o.CandidateID
    join [ICASchema].[tblOffer] ot on o.offerID = ot.OfferType
    join [ICASchema].[tblCandidateApplication] ca on ca.CourseID = ca.CourseID
    join [ICASchema].[tblCourse] co on co.CourseName = co.CourseName
    where c.CandidateID = @candidateID

    GROUP BY  co.CourseName, c.CandidateID,c.CandidateName, ca.CourseID, o.OfferID, ot.OfferTypePoints) tablealias order by CourseName

Answer 2

下面的示例用於創建一個簡單的Proc_GetAllUsers存儲過程。 這將解決您的重復問題。

如果存在Proc_GetAllUsers GO，則刪除程序

創建過程Proc_GetAllUsers（）開始

-您的SQL查詢選擇* FROM用戶;

結束

走

Answer 3

這是可行的解決方案。

[代碼]從ICASchema.tblCandidate AS中選擇​​c.CandidateID，c.CandidateName，ICASchema.tblOffer.OfferTypePoints，ICASchema.tblCourse.CourseName。 ICASchema.tblCandidateOffer.CandidateOfferID = ICASchema.tblOffer.OfferID內部聯接ICASchema.tblCourse ON ICASchema.tblOffer.OfferID = ICASchema.tblCourse.OfferTypeID WHERE（c.CandidateID ='3'）[/ code]