给出一张表：
----------------------------------------
REF | Date | Product | Mark |
----------------------------------------
1 | 01/01/2014 | A | X
1 | 07/01/2014 | B | X
1 | 14/01/2014 | C | X
1 | 21/01/2014 | A | X
1 | 31/01/2014 | A |
1 | 06/01/2014 | A | X
2 | 01/01/2014 | B |
2 | 07/01/2014 | B |
2 | 14/01/2014 | F |
2 | 21/01/2014 | A |
2 | 31/01/2014 | A |
2 | 06/01/2014 | D |
我需要在标记列中放置一个给定ref的位置，例如： 1，和给定的一组产品，例如A，B，C日期相隔7天。
e.g。对于ref 1
ex1：01/01/2014 | A是在ex2的7天之内 ex2：07/01/2014 | B在ex1和ex3的7天内 ex3：14/01/2014 | C在ex2和ex4的7天内 ex4：21/01/2014 | A是在ex3的7天内
所以你可以看到它们不是在7天之内，而是在7天之内相互串联。
另一个复杂因素是除非字符串包含A，B和C，否则不应标记任何内容！
我想你可以理解为什么我在努力解决这个问题，非常感谢任何建议！
由于
星
答案 0 :(得分：1)
样本表
CREATE TABLE #TEMP(REF INT,[DATE] DATE,PRODUCT VARCHAR(10))
INSERT INTO #TEMP
SELECT 1 , '01/01/2014' , 'A'
UNION ALL
SELECT 1 , '01/07/2014' , 'B'
UNION ALL
SELECT 1 , '01/14/2014' , 'C'
UNION ALL
SELECT 1 , '01/21/2014' , 'A'
UNION ALL
SELECT 1 , '01/31/2014' , 'A'
UNION ALL
SELECT 1 , '01/06/2014' , 'A'
UNION ALL
SELECT 2 , '01/01/2014' , 'B'
UNION ALL
SELECT 2 , '01/07/2014' , 'B'
UNION ALL
SELECT 2 , '01/14/2014' , 'F'
UNION ALL
SELECT 2 , '01/21/2014' , 'A'
UNION ALL
SELECT 2 , '01/31/2014' , 'A'
UNION ALL
SELECT 2 , '01/06/2014' , 'D'
QUERY
;WITH CTE AS
(
SELECT ROW_NUMBER() OVER(ORDER BY (SELECT(0)))RNO, *
FROM #TEMP
)
SELECT C1.REF,C1.[DATE],C1.PRODUCT,
CASE WHEN DATEDIFF(DAY,C2.[DATE],C1.[DATE]) BETWEEN -7 AND 7
AND C1.PRODUCT IN('A','B','C')
OR DATEDIFF(DAY,C2.[DATE],C1.[DATE]) IS NULL THEN 'X' ELSE NULL END MARK
FROM CTE C1
LEFT JOIN CTE C2 ON C1.RNO=C2.RNO+1 AND C1.REF=C2.REF
答案 1 :(得分：0)
这是标记你想要的记录......
DECLARE @prods TABLE (prod VARCHAR(10), prevprod VARCHAR(10), nextprod VARCHAR(10) )
INSERT INTO @prods (prod , prevprod , nextprod )
SELECT 'A','C','B'
UNION SELECT 'B','A','C'
UNION SELECT 'C','B','A'
DECLARE @dates TABLE (REF INT,[DATE] DATE,PRODUCT VARCHAR(10))
INSERT INTO @dates
SELECT 1, '01/01/2014' , 'A'
UNION ALL SELECT 1, '01/07/2014' , 'B'
UNION ALL SELECT 1, '01/14/2014' , 'C'
UNION ALL SELECT 1, '01/21/2014' , 'A'
UNION ALL SELECT 1, '01/31/2014' , 'A'
UNION ALL SELECT 1, '01/06/2014' , 'A'
UNION ALL SELECT 2, '01/01/2014' , 'B'
UNION ALL SELECT 2, '01/07/2014' , 'B'
UNION ALL SELECT 2, '01/14/2014' , 'F'
UNION ALL SELECT 2, '01/21/2014' , 'A'
UNION ALL SELECT 2, '01/31/2014' , 'A'
UNION ALL SELECT 2, '01/06/2014' , 'D'
SELECT x1.* , 'X' = CASE WHEN EXISTS(
SELECT * FROM @dates AS x2
INNER JOIN @prods AS p2 ON p2.prod = x2.PRODUCT
WHERE x1.REF = x2.REF AND
(
( DATEDIFF(day, x1.DATE , x2.DATE) BETWEEN 0 AND 7 AND p1.prod = p2.prevprod )
OR
( DATEDIFF(day, x1.DATE , x2.DATE) BETWEEN -7 AND 0 AND p1.prod = p2.nextprod )
)
) THEN 'X' ELSE '' END
FROM @dates AS x1
LEFT OUTER JOIN @prods AS p1 ON p1.prod = x1.PRODUCT
原始示例的结果：
REF DATE PRODUCT X
----------- ---------- ---------- ----
1 2014-01-01 A X
1 2014-01-07 B X
1 2014-01-14 C X
1 2014-01-21 A X
1 2014-01-31 A
1 2014-01-06 A X
2 2014-01-01 B
2 2014-01-07 B
2 2014-01-14 F
2 2014-01-21 A
2 2014-01-31 A
2 2014-01-06 D
现在，正如DominicA建议的那样，如果你改变了
UNION ALL SELECT 1，'01 / 14/2014'，'C'
到
UNION ALL SELECT 3，'01 / 14/2014'，'C'
你会得到这个结果
REF DATE PRODUCT X
----------- ---------- ---------- ----
1 2014-01-01 A X
1 2014-01-07 B X
3 2014-01-14 C
1 2014-01-21 A
1 2014-01-31 A
1 2014-01-06 A X
2 2014-01-01 B
2 2014-01-07 B
2 2014-01-14 F
2 2014-01-21 A
2 2014-01-31 A
2 2014-01-06 D
答案 2 :(得分：0)
现在我明白了你想要的......
原始列表：
DECLARE @prods TABLE (prod VARCHAR(10), prevprod VARCHAR(10), nextprod VARCHAR(10) )
INSERT INTO @prods (prod , prevprod , nextprod )
SELECT 'A','C','B'
UNION SELECT 'B','A','C'
UNION SELECT 'C','B','A'
DECLARE @dates TABLE (REF INT,[DATE] DATE,PRODUCT VARCHAR(10))
INSERT INTO @dates
SELECT 1, '01/01/2014' , 'A'
UNION ALL SELECT 1, '01/07/2014' , 'B'
UNION ALL SELECT 1, '01/14/2014' , 'C'
UNION ALL SELECT 1, '01/21/2014' , 'A'
UNION ALL SELECT 1, '01/31/2014' , 'A'
UNION ALL SELECT 1, '01/06/2014' , 'A'
UNION ALL SELECT 2, '01/01/2014' , 'B'
UNION ALL SELECT 2, '01/07/2014' , 'B'
UNION ALL SELECT 2, '01/14/2014' , 'F'
UNION ALL SELECT 2, '01/21/2014' , 'A'
UNION ALL SELECT 2, '01/31/2014' , 'A'
UNION ALL SELECT 2, '01/06/2014' , 'D'
;WITH list AS (
SELECT
REF1 = x1.REF, DATE1 = x1.DATE, PRODUCT1 = x1.PRODUCT
, REF2 = x2.REF, DATE2 = x2.DATE, PRODUCT2 = x2.PRODUCT
, REF3 = x3.REF, DATE3 = x3.DATE, PRODUCT3 = x3.PRODUCT
FROM @dates AS x1
INNER JOIN @prods AS p1 ON p1.prod = x1.PRODUCT
INNER JOIN @dates AS x2 ON x1.REF = x2.REF AND x2.PRODUCT = p1.nextprod AND DATEDIFF(day, x1.DATE , x2.DATE) BETWEEN 1 AND 7
INNER JOIN @prods AS p2 ON p2.prod = x2.PRODUCT
INNER JOIN @dates AS x3 ON x2.REF = x3.REF AND x3.PRODUCT = p2.nextprod AND DATEDIFF(day, x2.DATE , x3.DATE) BETWEEN 1 AND 7
)
, list2 as (
SELECT z.* , 'X' = CASE WHEN EXISTS(
SELECT *
FROM list AS x
WHERE
( z.REF = x.REF1 AND z.DATE = x.DATE1 AND z.PRODUCT = x.PRODUCT1 )
OR
( z.REF = x.REF2 AND z.DATE = x.DATE2 AND z.PRODUCT = x.PRODUCT2 )
OR
( z.REF = x.REF3 AND z.DATE = x.DATE3 AND z.PRODUCT = x.PRODUCT3 )
) THEN 'X' ELSE '' END
FROM @dates AS z
)
SELECT x.REF, X.DATE, X.PRODUCT, X = CASE WHEN x.X = '' AND EXISTS(
SELECT *
FROM @prods AS p
INNER JOIN list2 AS x4 ON x4.X = 'X'
AND x4.REF = x.REF
AND x4.PRODUCT = p.prevprod
AND DATEDIFF(day, x4.DATE , x.DATE) BETWEEN 1 AND 7
WHERE p.prod = x.PRODUCT
) THEN 'X' ELSE x.X END
FROM list2 AS x
INNER JOIN @prods AS p ON p.prod = x.PRODUCT
结果是：
REF DATE PRODUCT X
----------- ---------- ---------- ----
1 2014-01-01 A X
1 2014-01-07 B X
1 2014-01-14 C X
1 2014-01-21 A X
1 2014-01-31 A
1 2014-01-06 A X
2 2014-01-01 B
2 2014-01-07 B
2 2014-01-21 A
2 2014-01-31 A
现在，正如DominicA建议的那样，如果你改变了
UNION ALL SELECT 1, '01/14/2014' , 'C'
到
UNION ALL SELECT 3, '01/14/2014' , 'C'
你会得到这些结果：
REF DATE PRODUCT X
----------- ---------- ---------- ----
1 2014-01-01 A
1 2014-01-07 B
3 2014-01-14 C
1 2014-01-21 A
1 2014-01-31 A
1 2014-01-06 A
2 2014-01-01 B
2 2014-01-07 B
2 2014-01-21 A
2 2014-01-31 A
如果您改为
UNION ALL SELECT 1, '01/21/2014' , 'A'
到
UNION ALL SELECT 3, '01/21/2014' , 'A'
你会得到这些结果：
REF DATE PRODUCT X
----------- ---------- ---------- ----
1 2014-01-01 A X
1 2014-01-07 B X
1 2014-01-14 C X
3 2014-01-21 A
1 2014-01-31 A
1 2014-01-06 A X
2 2014-01-01 B
2 2014-01-07 B
2 2014-01-21 A
2 2014-01-31 A