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所以我的代码完美无瑕，但我需要进行一次升级，但我想不通。基本上。我每年都有一个价格，直到 2052 年（40 年）。我错开这些价格，将每个 ID 的起始年份和 5 个价格连续放置（总共 72 个 ID）。我还有一个从 550 开始的行号，每次循环增加 2。有一个区（我现在知道的）每次通过循环时都需要增加 3。在循环结束时设置变量值时，有没有办法设置 IF 语句或 CASE 语句？所以当我到达“SET @LINE = @LINE + 2”时，我需要一个类似于..

CASE
     WHEN DISTRICT = 'ALASKA'
     THEN @LINE = @LINE + 3
     ELSE @LINE = @LINE + 2
END

这是我现在正在使用的。

DECLARE @IDF INT
DECLARE @FLAG INT       
DECLARE @LINE INT
TRUNCATE TABLE #CODE
SET @IDF = 1
WHILE (@IDF < 73)   
BEGIN   
    SET @FLAG = (SELECT min(YEAR) FROM #TABLE1 WHERE ID = @IDF)
    SET @LINE = 550
    WHILE (@FLAG < 2053)
    BEGIN
        INSERT INTO #CODE(ID,DISTRICT,year,LINE,t1,t2,t3,t4,t5)
        SELECT ID,
               DISTRICT,
               year,
               (@LINE) AS 'LINE',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG) AS 't1',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG+1) AS 't2',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG+2) AS 't3',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG+3) AS 't4',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG+4) AS 't5'
        FROM #TABLE1 WHERE ID = @IDF AND YEAR = @FLAG
    SET @FLAG = @FLAG + 5
    SET @LINE = @LINE + 2
    END
SET @IDF = @IDF + 1
END
4

1 回答 1

1 
WHILE (@IDF < 73)   
BEGIN   
    SET @FLAG = (SELECT min(YEAR) FROM #TABLE1 WHERE ID = @IDF)
    SET @LINE = 550
    WHILE (@FLAG < 2053)
    BEGIN
        INSERT INTO #CODE(ID,DISTRICT,year,LINE,t1,t2,t3,t4,t5)
        SELECT ID,
               DISTRICT,
               year,
               (@LINE) AS 'LINE',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG) AS 't1',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG+1) AS 't2',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG+2) AS 't3',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG+3) AS 't4',
               (SELECT YEARLY_PRICING FROM #TABLE1 b WHERE b.ID = @IDF AND b.YEAR = @FLAG+4) AS 't5'
        FROM #TABLE1 WHERE ID = @IDF AND YEAR = @FLAG

    SELECT @LINE = CASE 
                        WHEN DISTRICT = 'ALASKA'
                        THEN @LINE + 3
                        ELSE @LINE + 2
                    END
    FROM #CODE
    WHERE LINE = @LINE
    AND [YEAR] = @FLAG

    SET @FLAG = @FLAG + 5
    END
SET @IDF = @IDF + 1
END
于 2013-10-23T15:22:18.197 回答