Sqlserver
 sql >> Teknologi Basis Data >  >> RDS >> Sqlserver

Bagaimana mengonversi kueri berbasis CURSOR menjadi berbasis SET

INSERT INTO T_PROJECTGROUPSDATA (uploadID, fieldA,fieldB,......fieldN )
SELECT t.ID,p.fieldA,mg.fieldB,......mgc.fieldN
FROM T_Projects mp
INNER JOIN T_UPLOADS t mp.ID = t.project_savix_ID
INNER JOIN  SG_Dynamic_Forms..v_projects p ON p.LegacyProjectId = mp.ID 
INNER JOIN Savix_Service_Group..Groups mg ON mg.Grp_Project = p.ProjectID 
INNER JOIN Savix_Service_Group..Group_Cycle mgc ON mgc.Gc_GroupID = mg.Grp_ID
INNER JOIN Savix_Service_Group..Group_Data mgd ON mgd.Gd_CycleID = mgc.Gc_ID
LEFT JOIN Savix_Service_Trainers..Trainers me ON me.Tr_ID = mgc.Gc_MonitoredBy
LEFT JOIN Savix_Service_Dictionaries..Dictionary mgt ON mgt.Dny_ID = me.Tr_Type 
WHERE mp.SyncMode = 1
AND t.[STATUS] = 3 AND t.UPLOADFILENAME = 'Automatic upload from web MIS'
AND mg.Grp_IsDeleted = 0 AND mgd.Gd_IsDeleted != 1


UPDATE t SET 
TOTALEXPENDITURES = CASE WHEN DATEDIFF(d,mp.PROJECTESTABLISHEDDATE,mp.EndDate) != 0 
    THEN p.Cost_Until_Today*DATEDIFF(d,mp.PROJECTESTABLISHEDDATE,dbo.fn_GetEndOfPeriod(t.Period_ID))/DATEDIFF(d,mp.PROJECTESTABLISHEDDATE,mp.EndDate)/dbo.fn_RateAtDate(p.PROJECTCURRENCY_ID,dbo.fn_GetEndOfPeriod(t.Period_ID))
    ELSE 0 
    END,
TotalExpendituresNative = CASE WHEN DATEDIFF(d,mp.PROJECTESTABLISHEDDATE,mp.EndDate) != 0 
    THEN p.Cost_Until_Today*DATEDIFF(d,mp.PROJECTESTABLISHEDDATE,dbo.fn_GetEndOfPeriod(t.Period_ID))/DATEDIFF(d,mp.PROJECTESTABLISHEDDATE,mp.EndDate)
    ELSE 0 
    END
FROM T_UPLOADS t
JOIN T_Projects mp ON mp.ID = t.project_savix_ID AND mp.SyncMode = 1
WHERE t.[STATUS] = 3 AND t.UPLOADFILENAME = 'Automatic upload from web MIS'

Untuk menjelaskan bagaimana saya membuat ini, berikut adalah versi modifikasi dari kode di bawah ini. Saya tidak bisa menjamin saya mendapatkan segalanya, saya harus membuat beberapa asumsi. Ada kekurangan data sampel dan semua tabel savix hilang. Ini adalah jawaban terbaik yang dapat saya berikan dengan memberikan informasi dan membatasi waktu saya hingga kurang dari 4 jam yang diinvestasikan. Saya bisa melakukan lebih banyak tetapi Anda harus memberi saya lebih dari ketenaran internet.

--ALTER PROCEDURE [dbo].[proc_Upload]  WITH RECOMPILE 
--as
set NoCount on

DECLARE
    @StartTime      datetime,
    @EndTime        datetime,
    @DataID         uniqueidentifier,
    @CollectionDate datetime,
    @Status         int,
    @PeriodID       int,
    @EndDate        datetime,
    @GroupID        uniqueidentifier,
    @ProjectID      INT,
    @FAID           uniqueidentifier,
    @UploadID       int ,
    @Createdate datetime, 
    @MINIDprojects INT,
    @MAXIDprojects INT,
    @MINIDdatasets INT,
    @MAXIDdatasets INT,
    @MINIDperiods INT,
    @MAXIDperiods INT

Sulit untuk bekerja dan menguji kursor, jadi saya menggantinya (proyek, proyek1, kumpulan data, dan periode) dengan tabel sementara yang berisi identitas dan mengulangnya.

IF OBJECT_ID('tempdb..#projects') IS NOT NULL DROP TABLE #projects
IF OBJECT_ID('tempdb..#projects1') IS NOT NULL DROP TABLE #projects1
IF OBJECT_ID('tempdb..#datasets') IS NOT NULL DROP TABLE #datasets
IF OBJECT_ID('tempdb..#period') IS NOT NULL DROP TABLE #period

CREATE TABLE #projects
(
    [ProjectID] [INT],
    [Title] [varchar](255) ,
    [currency] [int] ,
    [Cost_Until_Today] [float] ,
    [StartDate] [datetime] ,
    [EndDate] [datetime] ,
    [MisID] [uniqueidentifier] ,
    [SystemStatus] [int] ,
    [FacilitatingAgency] [uniqueidentifier] ,
    [SyncMode] [int] 
)

CREATE TABLE #projects1
(
    ID INT IDENTITY(1,1),
    [ProjectID] [INT],
    [FacilitatingAgency] [uniqueidentifier]
)

CREATE TABLE #datasets
(
    ID INT IDENTITY(1,1),
    Gd_ID [uniqueidentifier], 
    Grp_ID [uniqueidentifier], 
    Gd_CollectionDate DATETIME, 
    Gd_IsDeleted BIT, 
    Gd_CreateDate DATETIME
)

CREATE TABLE #period
(
    ID INT IDENTITY(1,1),
    IDPeriod INT,
    EndDate DATETIME
)

 INSERT #projects ( [ProjectID], [Title], {currency], [Cost_Until_Today], [StartDate], [EndDate], [MisID], [SystemStatus], [FacilitatingAgency], [SyncMode] )
 SELECT ID, PROJECTNAME, PROJECTCURRENCY_ID, Cost_Until_Today, PROJECTESTABLISHEDDATE, EndDate, MisID, 4, FacilitatingAgency, SyncMode 
 FROM [dbo].[T_PROJECTS] /*thsi is the source table where every projectIDs need to be processed*/

Projects berisi semua ID ( projectID ) dari T_Projects, satu-satunya bidang yang digunakan dari tabel ini adalah ID, projectcurrency, projectestablisheddate ( startdate ), enddate dan syncmode ( harus =1, kita akan melihatnya nanti ). Kita dapat mengabaikan status sistem karena ini adalah konstanta.

Dastaset tabel dijatuhkan dan dimuat di sini. Kami hanya peduli dengan gd_id dari tabel Savix_Service_Group..Group_Data tetapi masih perlu bergabung ke tabel lain jika mereka memfilter nilai yang tidak kami inginkan. Logika ini digunakan lagi di bawah saat memasukkan catatan.

IF exists ( select  * from    dbo.sysobjects where   id = object_id(N'[dbo].datasets]') and objectproperty(id, N'IsTable') = 1 ) DROP Table [dbo].datasets

SELECT mgd.Gd_ID, mg.Grp_ID, mgd.Gd_CollectionDate, mgd.Gd_IsDeleted, mgd.Gd_CreateDate, mg.Grp_Project, mg.Grp_IsDeleted , mg.Grp_Legacy_ID,  p.LegacyProjectId
INTO datasets
FROM Savix_Service_Group..Group_Data mgd 
        INNER JOIN Savix_Service_Group..Group_Cycle mgc ON mgc.Gc_ID = mgd.Gd_CycleID
        INNER JOIN Savix_Service_Group..Groups mg ON mg.Grp_ID = mgc.Gc_GroupID 
        inner join SG_Dynamic_Forms..v_projects p ON p.ProjectID = mg.Grp_Project

--DECLARE projects1 CURSOR LOCAL FOR Select distinct ProjectID, isnull([FacilitatingAgency], '00000000-0000-0000-0000-000000000000') from @projects P WHERE P.SystemStatus = 4 AND P.SyncMode = 1 
--/*First cursor - fetch the cursor from ProjectaTable*/

--OPEN projects1
--FETCH NEXT FROM projects1 INTO @ProjectID, @FAID
--WHILE @@FETCH_STATUS = 0

Di sini kita memasukkan ke dalam proyek1 nilai yang berbeda dari id proyek. Tanpa lebih banyak data, asumsi saya adalah bahwa ID berbeda dalam tabel T_projects dan oleh karena itu langkah ini agak tidak perlu selain menyaring dengan SyncMode =1. Ingat bahwa SystemStatus adalah konstan dan kami mengisinya dengan nilai '4', ini kriteria dapat dihapus tanpa efek.

INSERT INTO #projects1 ( ProjectID, FacilitatingAgency )
SELECT DISTINCT ProjectID, isnull([FacilitatingAgency], '00000000-0000-0000-0000-000000000000')  
FROM #projects p
WHERE SystemStatus = 4 AND SyncMode = 1

SELECT @MINIDprojects = MIN(ID), @MAXIDprojects = MAX(ID) FROM #projects1
WHILE @MINIDprojects < @MAXIDprojects + 1
BEGIN
--    BEGIN TRY
--        BEGIN TRAN

SELECT @ProjectID = ProjectID, @FAID = FacilitatingAgency FROM #projects1 WHERE ID = @MINIDprojects

        --DELETE FROM T_PROJECTGROUPSDATA WHERE T_PROJECTGROUPSDATA.UPLOAD_ID IN (SELECT ID FROM T_UPLOADS WHERE project_savix_ID = @ProjectID AND UPLOADFILENAME = 'Automatic upload from web MIS')

        --DECLARE datasets CURSOR LOCAL  FAST_FORWARD FOR SELECT Gd_ID, Grp_ID, Gd_CollectionDate, Gd_IsDeleted, Gd_CreateDate 
        --    FROM datasets
        --    WHERE LegacyProjectId = @ProjectID AND Grp_IsDeleted = 0 AND Gd_IsDeleted != 1 
        --    /*Second cursor - this will get the 'collectionDate'field from datasetsTable for every project fetched in above cursor and also get @dataID which is used to insert value in to other table-T_PROJECTGROUPSDATA*/
        --OPEN datasets

        --FETCH NEXT FROM datasets INTO @DataID, @GroupID, @CollectionDate, @Status, @Createdate
        --WHILE @@FETCH_STATUS = 0

Di sini kita masukkan ke #datasets filtering by T_Project.ID AND Savix_Service_Group..Groups.Grp_IsDeleted =0 AND Savix_Service_Group..Group_Data.Gd_IsDeleted !=1

        INSERT INTO #datasets ( Gd_ID, Grp_ID, Gd_CollectionDate, Gd_IsDeleted, Gd_CreateDate )
        SELECT Gd_ID, Grp_ID, Gd_CollectionDate, Gd_IsDeleted, Gd_CreateDate FROM datasets WHERE LegacyProjectId = @ProjectID AND Grp_IsDeleted = 0 AND Gd_IsDeleted != 1 

        SELECT @MINIDdatasets = MIN(ID), @MAXIDdatasets = MAX(ID) FROM #datasets

        WHILE @MINIDdatasets < @MAXIDdatasets + 1
        BEGIN

            SELECT @DataID = Gd_ID, @GroupID = Grp_ID, @CollectionDate = Gd_CollectionDate, @Status = Gd_IsDeleted, @Createdate = Gd_CreateDate FROM #datasets WHERE ID = @MINIDdatasets

            --DECLARE period CURSOR LOCAL  FAST_FORWARD FOR SELECT ID, dbo.fn_GetEndOfPeriod(ID) FROM T_PERIODS
            --/* dbo.fn_GetEndOfPeriod(ID) - this function will give the end of the date of that specifc quarter for any given date*/
            --    WHERE DATEDIFF(dd,@CollectionDate,dbo.fn_GetEndOfPeriod(ID)) >= 0
            --    ORDER BY [YEAR],[Quarter]
            --    /*Third Cursor - this will process the records from another table called period with above fetched @collectionDate*/

            --OPEN period
            --FETCH NEXT FROM period INTO @PeriodID, @EndDate
            --WHILE @@FETCH_STATUS = 0

Ini mungkin penggunaan kursor terburuk di sini. Kami memuat semua periode dan menggilirnya. Pada akhirnya kita hanya peduli dengan periode yang ada di tabel T_UPLOADS.

            INSERT INTO #period ( IDPeriod, EndDate ) SELECT ID, dbo.fn_GetEndOfPeriod(ID) FROM T_PERIODS WHERE DATEDIFF(dd,@CollectionDate,dbo.fn_GetEndOfPeriod(ID)) >= 0
            SELECT @MINIDperiods = MIN(ID), @MAXIDperiods = MAX(ID) FROM #period

            WHILE @MINIDperiods < @MAXIDperiods + 1
            BEGIN

                --IF EXISTS (SELECT * FROM Savix_Service_Group..Group_Data mgd 
                --    INNER JOIN Savix_Service_Group..Group_Cycle mgc ON mgc.Gc_ID = mgd.Gd_CycleID
                --    WHERE mgc.Gc_GroupID = @GroupID
                --        AND DATEDIFF(dd,mgd.Gd_CollectionDate,@EndDate) >= 0 
                --        AND (mgd.Gd_CollectionDate > @CollectionDate ) 
                --        AND mgd.Gd_IsDeleted != 1) 

                --BEGIN
                --    BREAK
                --END

Di sini kita melewatkan setiap periode di mana UPLOADFILENAME !='Automatic upload from web MIS'

                --IF EXISTS (SELECT ID FROM T_UPLOADS u WHERE  u.project_savix_ID = @ProjectID AND u.PERIOD_ID = @PeriodID AND u.STATUS = 3 AND UPLOADFILENAME != 'Automatic upload from web MIS') 
                --BEGIN
                --    FETCH NEXT FROM period INTO @PeriodID, @EndDate
                --    CONTINUE
                --END

Dengan mengingat hal itu, kami hanya peduli di mana status =3 dan UPLOADFILENAME ='Unggah otomatis dari web MIS'

                SET @UploadID = (SELECT ID FROM T_UPLOADS u WHERE  u.project_savix_ID = @ProjectID AND u.PERIOD_ID = @PeriodID AND u.[STATUS] = 3 AND UPLOADFILENAME = 'Automatic upload from web MIS')

                /*If T_uploads doesn't have appropirate period ID from cursor fetch then create a new entry in T_uploads with current projectID*/

                IF @UploadID IS NOT NULL
                        BEGIN

                            --declare @Project_ID_Legacy int = ISNULL((select distinct PROJECT_ID from T_UPLOADS where project_savix_ID = @ProjectID),@ProjectID)

Mengapa mereka menggunakan tabel kedua ( T_UPLOADFIRSTSTEP ) untuk menghasilkan catatan di mana mereka hanya menggunakan id dan kemudian menghapus catatan menggunakan ID itu dalam pembuatan catatan T_Uploads adalah di luar pemahaman saya dan bagi saya tampaknya pengkodean yang buruk.

    --                            INSERT INTO T_UPLOADSFIRSTSTEP
    --                                   (PROJECT_ID
    --                                   --,UPLOADDATE
    --                                   --,UPLOADFILENAME
    --                                   --,UPLOADUSER_ID
    --                                   --,CURRENTSTEP
    --                                   ,[STATUS]
    --                                   ,Project_ID_MIS)
    --                             SELECT ISNULL((select distinct PROJECT_ID from T_UPLOADS where project_savix_ID = @ProjectID),@ProjectID),
    --                                    --GETDATE(),
    --                                    --'Automatic upload from web MIS',
    --                                    --2,
    --                                    --2,
    --                                    0,
    --                                    @ProjectID

Penyisipan ke T_UPLOADS akan selalu gagal karena ada bidang yang tidak boleh null yang tidak ada dalam daftar penyisipan dan tidak memiliki nilai default yang ditetapkan untuknya.

    --                            INSERT INTO T_UPLOADS ( ID, periodID, projectID,UPLOADDATE,UPLOADFILENAME,UPLOADUSER_ID )
    --                             SELECT uf.ID,
    --                                    @PeriodID,
    --                                    ISNULL((select distinct PROJECT_ID from T_UPLOADS where project_savix_ID = @ProjectID),@ProjectID),
    --                                    GETDATE(),
    --                                    'Automatic upload from web MIS',
    --                                    2
    --                             FROM T_UPLOADSFIRSTSTEP uf
    --                             INNER JOIN #projects mp ON  uf.Project_ID_MIS = mp.ProjectID
    --                             WHERE  uf.Project_ID_MIS = @ProjectID AND uf.[STATUS] = 0 
    --                                AND NOT EXISTS (SELECT * FROM T_UPLOADS u WHERE u.PROJECT_ID  = uf.PROJECT_ID AND u.PERIOD_ID = @PeriodID AND u.[STATUS] = 3)

    --                            DELETE FROM T_UPLOADSFIRSTSTEP WHERE STATUS = 0 AND PROJECT_ID = ISNULL((select distinct PROJECT_ID from T_UPLOADS where project_savix_ID = @ProjectID),@ProjectID)

    --                            --SET @UploadID = (SELECT ID FROM T_UPLOADS u WHERE  u.project_savix_ID = @ProjectID AND u.PERIOD_ID = @PeriodID AND u.[STATUS] = 3)
    --            END 
                --ELSE

Jadi inilah logika sebenarnya yang dilakukan di dalam 3 kursor tersebut. Memahami bahwa kita tidak peduli tentang periode, logika berputar melalui semuanya. Kami hanya peduli bahwa kami harus memfilter kriteria tertentu ( status =3 dan UPLOADFILENAME ='Unggah otomatis dari MIS web' ) dan bahwa mereka memiliki tabel T_Project.ID yang cocok dengan kriteria T_Projects.SyncMode =1

                            UPDATE t SET 
                                    TOTALEXPENDITURES = CASE WHEN DATEDIFF(d,mp.StartDate,mp.EndDate) != 0 
                                            THEN mp.Cost_Until_Today*DATEDIFF(d,mp.StartDate,dbo.fn_GetEndOfPeriod(t.Period_ID))/DATEDIFF(d,mp.StartDate,mp.EndDate)/dbo.fn_RateAtDate(mp.Currency,dbo.fn_GetEndOfPeriod(t.Period_ID))
                                            ELSE 0 
                                            END,
                                    TotalExpendituresNative = CASE WHEN DATEDIFF(d,mp.StartDate,mp.EndDate) != 0 
                                            THEN mp.Cost_Until_Today*DATEDIFF(d,mp.StartDate,dbo.fn_GetEndOfPeriod(t.Period_ID))/DATEDIFF(d,mp.StartDate,mp.EndDate)
                                            ELSE 0 
                                            END
                            FROM T_UPLOADS t
                            JOIN #projects mp ON mp.ProjectID = t.project_savix_ID
                            WHERE 1=1 -- t.ID = @UploadID 
                            --AND t.project_savix_ID = @ProjectID AND t.PERIOD_ID = @PeriodID 
                            AND t.[STATUS] = 3 AND t.UPLOADFILENAME = 'Automatic upload from web MIS'

Sisipan ke T_PROJECTGROUPDATA telah menduplikasi logika yang digunakan untuk membuat variabel @dataid yang berasal dari #datasets. Yang berasal dari tabel kumpulan data yang kami jatuhkan dan buat di atas.

                        INSERT INTO T_PROJECTGROUPSDATA (uploadID, fieldA,fieldB,......fieldN )

                         SELECT @UploadID,p.fieldA,mg.fieldB,......mgc.fieldN
                         FROM #projects mp
                         inner join  SG_Dynamic_Forms..v_projects p ON p.LegacyProjectId = mp.projectID 
                         inner join Savix_Service_Group..Groups mg ON mg.Grp_Project = p.ProjectID 
                         INNER JOIN Savix_Service_Group..Group_Cycle mgc ON mgc.Gc_GroupID = mg.Grp_ID
                         INNER JOIN Savix_Service_Group..Group_Data mgd ON mgd.Gd_CycleID = mgc.Gc_ID
                         LEFT JOIN Savix_Service_Trainers..Trainers me ON me.Tr_ID = mgc.Gc_MonitoredBy
                         LEFT JOIN Savix_Service_Dictionaries..Dictionary mgt ON mgt.Dny_ID = me.Tr_Type 
                         --left join v1_Report_UDF_Data_UploadToSavix udf on udf.DataID = mgd.Gd_ID
                         WHERE mgd.Gd_ID = @DataID 

                --FETCH NEXT FROM period INTO @PeriodID, @EndDate
                SET @MINIDperiods = @MINIDperiods + 1
            END
            --CLOSE period
            --DEALLOCATE period

            --FETCH NEXT FROM datasets INTO @DataID, @GroupID, @CollectionDate, @Status, @Createdate
            SET @MINIDdatasets = @MINIDdatasets + 1
        END

        --CLOSE datasets
        --DEALLOCATE datasets

        --COMMIT
    --END TRY
    --BEGIN CATCH



        --SELECT ERROR_NUMBER(), ERROR_MESSAGE(),@PeriodID, @ProjectID, @UploadID,@DataID
        --IF CURSOR_STATUS('global' , 'period') >= 0
        --BEGIN
        --    CLOSE period
        --    DEALLOCATE uploadID
        --END

        --IF CURSOR_STATUS('global' , 'datasets') >= 0
        --BEGIN
        --    CLOSE datasets
        --    DEALLOCATE datasets
        --END

        --IF @@TRANCOUNT > 0
        --    ROLLBACK

        --INSERT INTO error_catch_UploadtoSavix

        --SELECT cast(ERROR_NUMBER() as nvarchar), ERROR_MESSAGE(),@PeriodID, @ProjectID, @UploadID,@DataID, getdate()
    --END CATCH

    SET @MINIDprojects = @MINIDprojects + 1
    --FETCH NEXT FROM projects1 INTO @ProjectID, @FAID
END


--CLOSE projects1
--DEALLOCATE projects1

--SELECT 1 as success

Di sana Anda memilikinya. Menyingkat hampir 300 baris dan 3 kursor menjadi 30 baris dan tanpa kursor.




  1. Database
  2.   
  3. Mysql
  4.   
  5. Oracle
  6.   
  7. Sqlserver
  8.   
  9. PostgreSQL
  10.   
  11. Access
  12.   
  13. SQLite
  14.   
  15. MariaDB
  1. Bagaimana DB_NAME() Bekerja di SQL Server

  2. Kueri SQL dengan kolom kembali berdasarkan pengelompokan

  3. Memindahkan Tabel SQL Server ke Filegroup Berbeda

  4. Memilih Prosesor untuk SQL Server 2014 – Bagian 1

  5. SQL Server Nvarchar dan Java menyiapkan pernyataan