我有一个大的查询，相对较大。即使我已指定＆＃39; DISTINCT＆＃39;，此查询也会在MATERIAL列上不断生成多个结果。我想通过指定＆＃39; DISTINCT＆＃39;并总结我需要的值，它将产生每个MATERIAL数一行。任何人都可以帮我看看我在这里做错了什么。我意识到最后一个子查询在这一点上可能是多余的 - 我正在测试，这就是我得到的结果。
提前谢谢。
DECLARE @daynumber as int
SET @daynumber = CASE
WHEN DATENAME(dw,GETDATE()) = 'Monday'
THEN 56
WHEN DATENAME(dw,GETDATE()) = 'Tuesday'
THEN 57
WHEN DATENAME(dw,GETDATE()) = 'Wednesday'
THEN 58
WHEN DATENAME(dw,GETDATE()) = 'Thursday'
THEN 59
WHEN DATENAME(dw,GETDATE()) = 'Friday'
THEN 60
END;
SELECT DISTINCT MATERIAL,
PLANT_CODE,
STOCK_CATEGORY,
material_desc AS 'MATERIAL_DESC',
division_id AS 'DIVISION_ID',
UPPER(division_desc) AS 'DIVISION_DESC',
UPPER(gender_id) AS 'GENDER_ID',
UPPER(gender_desc) AS 'GENDER_DESC',
DISTRIBUTION_VERSION_CODE,
PERIOD_CODE,
REQUIREMENTS_DATE,
VERSION_IND_FLAG,
TECHNICAL_INDEX,
SIZE_LITERAL,
[ORIGINAL FCST QTY],
WITHDRAWN_QUANTITY,
[REM PLAN QTY],
FUTURE_FCST,
TOTAL_OH_INV
FROM (
SELECT P1.PLANT_CODE,
P1.STOCK_CATEGORY,
P1.MATERIAL,
M1.material_desc AS 'MATERIAL_DESC',
M1.division_id AS 'DIVISION_ID',
UPPER(M1.division_desc) AS 'DIVISION_DESC',
UPPER(M1.gender_id) AS 'GENDER_ID',
UPPER(M1.gender_desc) AS 'GENDER_DESC',
P1.DISTRIBUTION_VERSION_CODE,
P1.PERIOD_CODE,
P1.REQUIREMENTS_DATE,
P1.VERSION_IND_FLAG,
P1.TECHNICAL_INDEX,
P1.SIZE_LITERAL,
P1.[ORIGINAL FCST QTY],
P1.WITHDRAWN_QUANTITY,
P1.[REM PLAN QTY],
P2.FUTURE_FCST,
SUM(I1.ON_HAND_QUANTITY) AS 'TOTAL_OH_INV'
FROM
(SELECT PLANT_CODE,
STOCK_CATEGORY,
MATERIAL,
DISTRIBUTION_VERSION_CODE,
PERIOD_CODE,
REQUIREMENTS_DATE,
PLANNED_QTY AS 'REM PLAN QTY',
VERSION_IND_FLAG,
SIZE_LITERAL,
WITHDRAWN_QUANTITY,
TECHNICAL_INDEX,
PLANNED_QTY + WITHDRAWN_QUANTITY AS 'ORIGINAL FCST QTY'
FROM VW_PLANNED_REQMNTS_TXT
WHERE PLANT_CODE IN ('6040','6041')
AND STOCK_CATEGORY IN ('A60385000','A60385003')
AND DISTRIBUTION_VERSION_CODE IN ('00','01','ZU','Z2')
AND REQUIREMENTS_DATE < GETDATE() - @daynumber
AND PLANNED_QTY > 0) AS P1
LEFT OUTER JOIN
(SELECT
SUM(PLANNED_QTY) AS 'FUTURE_FCST',
MATERIAL,
TECHNICAL_INDEX
FROM VW_PLANNED_REQMNTS_TXT P
WHERE REQUIREMENTS_DATE >= GETDATE()
AND PLANNED_QTY > 0
AND STOCK_CATEGORY IN ('A60385000','A60385003')
GROUP BY MATERIAL,
TECHNICAL_INDEX,
SIZE_LITERAL) AS P2
ON P1.MATERIAL = P2.MATERIAL
AND P1.TECHNICAL_INDEX = P2.TECHNICAL_INDEX
LEFT OUTER JOIN
(SELECT ON_HAND_QUANTITY,
TECHNICAL_INDEX,
MATERIAL,
STOCK_CATEGORY,
PLANT_CODE
FROM VW_INVENTORY I
WHERE STOCK_CATEGORY IN ('A60385000','A60385003')
GROUP BY TECHNICAL_INDEX,
MATERIAL,
STOCK_CATEGORY,
ON_HAND_QUANTITY,
PLANT_CODE) AS I1
ON P1.MATERIAL = I1.MATERIAL
AND P1.TECHNICAL_INDEX = I1.TECHNICAL_INDEX
AND P1.PLANT_CODE = I1.PLANT_CODE
LEFT OUTER JOIN
(SELECT M.material_number,
M.material_desc,
M.division_id,
D.division_desc,
M.gender_id,
G.gender_desc
FROM MaterialMaster.dbo.Material M
JOIN MaterialMaster.dbo.Ref_Division D
ON M.division_id = D.division_id
JOIN MaterialMaster.dbo.Ref_Gender G
ON M.gender_id = G.gender_id) AS M1
ON P1.MATERIAL = M1.material_number
GROUP BY P1.PLANT_CODE,
P1.STOCK_CATEGORY,
P1.MATERIAL,
P1.DISTRIBUTION_VERSION_CODE,
P1.PERIOD_CODE,
P1.REQUIREMENTS_DATE,
P1.[REM PLAN QTY],
P1.VERSION_IND_FLAG,
P1.WITHDRAWN_QUANTITY,
P1.SIZE_LITERAL,
P1.TECHNICAL_INDEX,
P1.[ORIGINAL FCST QTY],
P2.FUTURE_FCST,
M1.material_desc,
M1.division_id,
M1.division_desc,
M1.gender_id,
M1.gender_desc) AS T1 /* T1 Represents "Total" for all */
GROUP BY PLANT_CODE,
STOCK_CATEGORY,
MATERIAL,
material_desc,
division_id,
division_desc,
gender_id,
gender_desc,
DISTRIBUTION_VERSION_CODE,
PERIOD_CODE,
REQUIREMENTS_DATE,
VERSION_IND_FLAG,
TECHNICAL_INDEX,
SIZE_LITERAL,
[ORIGINAL FCST QTY],
WITHDRAWN_QUANTITY,
[REM PLAN QTY],
FUTURE_FCST,
TOTAL_OH_INV
答案 0 :(得分：0)
您使用2次GROUP BY子句执行相同的操作。外GROUP BY没有效果。此外，当你已经使用DISTINCT时，使用GROUP BY意味着，某些事情是错误的，正如@mason在他的评论中指出的那样。你试图删除一些行，但这不是一个好方法，它只会混淆问题。
另一个建议：对于字段名称，使用[和]字符代替'字符，例如M1.material_desc AS [MATERIAL_DESC]。它将提高SQL的可读性，这是您需要编写较长查询的错误 - char文字为红色。
所以内部查询 - 有问题的部分 - 应该像这样重新格式化，以便可读：
SELECT P1.PLANT_CODE, P1.STOCK_CATEGORY, P1.MATERIAL, M1.material_desc AS [MATERIAL_DESC], M1.division_id AS [DIVISION_ID],
UPPER(M1.division_desc) AS [DIVISION_DESC], UPPER(M1.gender_id) AS [GENDER_ID], UPPER(M1.gender_desc) AS [GENDER_DESC],
P1.DISTRIBUTION_VERSION_CODE, P1.PERIOD_CODE, P1.REQUIREMENTS_DATE, P1.VERSION_IND_FLAG, P1.TECHNICAL_INDEX, P1.SIZE_LITERAL,
P1.[ORIGINAL FCST QTY], P1.WITHDRAWN_QUANTITY, P1.[REM PLAN QTY], P2.[FUTURE_FCST], SUM(I1.ON_HAND_QUANTITY)
AS [TOTAL_OH_INV]
FROM (SELECT PLANT_CODE, STOCK_CATEGORY, MATERIAL, DISTRIBUTION_VERSION_CODE, PERIOD_CODE, REQUIREMENTS_DATE,
PLANNED_QTY AS [REM PLAN QTY], VERSION_IND_FLAG, SIZE_LITERAL, WITHDRAWN_QUANTITY, TECHNICAL_INDEX,
PLANNED_QTY + WITHDRAWN_QUANTITY AS [ORIGINAL FCST QTY]
FROM VW_PLANNED_REQMNTS_TXT
WHERE (PLANT_CODE IN ('6040', '6041')) AND (STOCK_CATEGORY IN ('A60385000', 'A60385003'))
AND (DISTRIBUTION_VERSION_CODE IN ('00', '01', 'ZU', 'Z2'))
AND (REQUIREMENTS_DATE < GETDATE() - @daynumber) AND (PLANNED_QTY > 0)
) AS P1 LEFT OUTER JOIN
(SELECT SUM(PLANNED_QTY) AS [FUTURE_FCST], MATERIAL, TECHNICAL_INDEX
FROM VW_PLANNED_REQMNTS_TXT AS P
WHERE (REQUIREMENTS_DATE >= GETDATE()) AND (PLANNED_QTY > 0)
AND (STOCK_CATEGORY IN ('A60385000', 'A60385003'))
GROUP BY MATERIAL, TECHNICAL_INDEX, SIZE_LITERAL
) AS P2 ON P1.MATERIAL = P2.MATERIAL AND P1.TECHNICAL_INDEX = P2.TECHNICAL_INDEX
LEFT OUTER JOIN
(SELECT ON_HAND_QUANTITY, TECHNICAL_INDEX, MATERIAL, STOCK_CATEGORY, PLANT_CODE
FROM VW_INVENTORY AS I
WHERE (STOCK_CATEGORY IN ('A60385000', 'A60385003'))
GROUP BY TECHNICAL_INDEX, MATERIAL, STOCK_CATEGORY, ON_HAND_QUANTITY, PLANT_CODE
) AS I1 ON P1.MATERIAL = I1.MATERIAL AND P1.TECHNICAL_INDEX = I1.TECHNICAL_INDEX AND P1.PLANT_CODE = I1.PLANT_CODE
LEFT OUTER JOIN
(SELECT M.material_number, M.material_desc, M.division_id, D.division_desc, M.gender_id, G.gender_desc
FROM MaterialMaster.dbo.Material AS M
INNER JOIN MaterialMaster.dbo.Ref_Division AS D ON M.division_id = D.division_id
INNER JOIN MaterialMaster.dbo.Ref_Gender AS G ON M.gender_id = G.gender_id
) AS M1 ON P1.MATERIAL = M1.material_number
GROUP BY PLANT_CODE, STOCK_CATEGORY, MATERIAL, DISTRIBUTION_VERSION_CODE, PERIOD_CODE, REQUIREMENTS_DATE,
P1.[REM PLAN QTY], P1.VERSION_IND_FLAG, P1.WITHDRAWN_QUANTITY, P1.SIZE_LITERAL, P1.TECHNICAL_INDEX, P1.[ORIGINAL FCST QTY],
P2.[FUTURE_FCST], M1.material_desc, M1.division_id, M1.division_desc, M1.gender_id, M1.gender_desc
在这里你应该找到你的问题。
分别检查每个内部SELECT，验证它是否返回了所需的结果。问题可能是您从VW_PLANNED_REQMNTS_TXT中有两次SELECT。我建议您尝试删除P2子查询，看看会发生什么。为什么P2不是P1子查询的一部分？
FROM (SELECT PLANT_CODE, STOCK_CATEGORY, MATERIAL, DISTRIBUTION_VERSION_CODE, PERIOD_CODE, REQUIREMENTS_DATE,
PLANNED_QTY AS [REM PLAN QTY], VERSION_IND_FLAG, SIZE_LITERAL, WITHDRAWN_QUANTITY, TECHNICAL_INDEX,
PLANNED_QTY + WITHDRAWN_QUANTITY AS [ORIGINAL FCST QTY]
(SELECT SUM(PLANNED_QTY)
FROM VW_PLANNED_REQMNTS_TXT
WHERE (REQUIREMENTS_DATE >= GETDATE()) AND (PLANNED_QTY > 0)
AND (STOCK_CATEGORY IN ('A60385000', 'A60385003'))
AND MATERIAL=P.MATERIAL AND TECHNICAL_INDEX=P.TECHNICAL_INDEX
GROUP BY SIZE_LITERAL) AS [FUTURE_FCST]
FROM VW_PLANNED_REQMNTS_TXT P
WHERE (PLANT_CODE IN ('6040', '6041')) AND (STOCK_CATEGORY IN ('A60385000', 'A60385003'))
AND (DISTRIBUTION_VERSION_CODE IN ('00', '01', 'ZU', 'Z2'))
AND (REQUIREMENTS_DATE < GETDATE() - @daynumber) AND (PLANNED_QTY > 0)
) AS P1
LEFT OUTER JOIN
(SELECT ON_HAND_QUANTITY, TECHNICAL_INDEX, MATERIAL, STOCK_CATEGORY, PLANT_CODE
LEFT OUTER JOIN也可以生成没有任何MATERIAL的行。为什么不加入INNER？
但是你的问题不能在最后的GROUP BY子句中奇迹般地解决，因为你只有SUM所有选定字段的一个字段。