使用遊標做遍歷操作

DECLARE @AssessThemeID INT
DECLARE @EntityID INT

DECLARE MyCursor CURSOR  --定義遊標
FOR
    SELECT ContactID,AssessThemes.ID AS AssessThemeID
    FROM AssessWorkLoadAudit LEFT JOIN AssessThemes 
    ON AssessWorkLoadAudit.AssessThemeID=AssessThemes.ID 
    WHERE AssessThemes.ID IN 
    (
    SELECT
 
 ID FROM AssessThemes WHERE YearNum=2016 OR YearNum=2015
    )
OPEN MyCursor  --開啟遊標
FETCH FROM MyCursor INTO @EntityID,@AssessThemeID  --取遊標第一行，將欄位值賦予@EntityID和@AssessThemeID
WHILE(@@FETCH_STATUS=0)
BEGIN
    IF(@EntityID IS NOT NULL AND @AssessThemeID IS NOT NULL)
    BEGIN
        --執行帶參的儲存過程 AnnualSummaryUpdateAssessTabletest
        EXEC
 
 AnnualSummaryUpdateAssessTabletest @EntityID,@AssessThemeID
    END
    FETCH FROM MyCursor INTO @EntityID,@AssessThemeID  --取遊標的下一行並將欄位值賦予@EntityID和@AssessThemeID
END
CLOSE MyCursor  --關閉遊標
DEALLOCATE MyCursor   --釋放遊標

使用臨時表做遍歷操作

臨時表：臨時表的名稱以“#”開頭，臨時表儲存在tempdb這個系統資料庫當中

臨時表如何實現遍歷操作？

在根據查詢結果建立臨時表時，在臨時表中加入一列標識列，標識列資料型別為整形，且取值為一個“從1開始以1遞增”的序列

--建立臨時表#AWLA
SELECT IDENTITY(INT) AS NewID,* INTO #AWLA 
FROM (SELECT ContactID,AssessThemes.ID AS AssessThemeID
    FROM AssessWorkLoadAudit LEFT JOIN AssessThemes 
    ON AssessWorkLoadAudit.AssessThemeID=AssessThemes.ID 
    WHERE AssessThemes.ID IN (SELECT ID FROM AssessThemes WHERE YearNum=2016 OR YearNum=2015)
    ) AS A

DECLARE @EntityID INT
DECLARE @AssessThemeID INT
DECLARE @NewID INT
DECLARE @RowCount INT 
SELECT @NewID=1,@RowCount=MAX(NewID) FROM #AWLA 
WHILE @NewID<[email protected]
BEGIN
    SELECT @EntityID=ContactID,@AssessThemeID=AssessThemeID FROM #AWLA WHERE [email protected]
    EXEC AnnualSummaryUpdateAssessTabletest @EntityID,@AssessThemeID
    SET @[email protected]+1
END
--刪除臨時表
DROP TABLE #AWLA