SQL将不带事务的日期显示为值=0
SQL将不带事务的日期显示为值=0
提问于 2012-07-23 18:48:42
我在做体重报告，我有个问题。我使用这个查询来知道仓库中重量的输入，但是当某个日期没有交易时，这个日期就不会出现在结果中。
SELECT erp.MKPF.BUDAT AS Data,
Sum( erp.MSEG.MENGE * erp.MARM.BRGEW ) as pes
From erp.MKPF
INNER Join erp.MSEG on erp.MKPF.MANDT = erp.MSEG.MANDT and erp.MKPF.MBLNR = erp.MSEG.MBLNR
INNER Join erp.MARM on erp.MSEG.MANDT = erp.MARM.MANDT and erp.MSEG.MATNR = erp.MARM.MATNR And erp.MSEG.MEINS = erp.MARM.MEINH
INNER JOIN erp.MARA on erp.MSEG.MANDT = erp.MARA.MANDT and erp.MSEG.MATNR = erp.MARA.MATNR
WHERE erp.MKPF.MANDT = '100'
and erp.MKPF.BUDAT >= '20120720'
and erp.MKPF.BUDAT <= CONVERT(VARCHAR(8), GETDATE(), 112) -1
and erp.MSEG.LGORT in ('1001','1069')
and erp.MSEG.BWART In ('101','102','311','312')
and erp.MSEG.WERKS = '1001'
and erp.MARA.MTART in ('Z001','Z010','Z002','Z02E')
GROUP BY erp.MKPF.BUDAT*现在结果是这样的：
Data PES
20120720 9999999.9999
20120721 9999999.8888
20120723 9999999.7777我需要这个
Data PES
20120720 9999999.9999
20120721 9999999.8888
20120722 0
20120723 999999.7777有人能帮帮我吗？
回答 2
Stack Overflow用户
回答已采纳
发布于 2012-07-23 20:26:34
使用表或视图来生成感兴趣的日期范围，并让它驱动查询。然后，将结果外部连接到此视图。这可以在查询中动态完成。例如，在Oracle中，您可以使用"connect by“生成一个序列：
create table my_summary(the_day date, pes number);
insert into my_summary values(to_date('20120720', 'yyyymmdd'), 9999999.9999);
insert into my_summary values(to_date('20120721', 'yyyymmdd'), 9999999.8888);
insert into my_summary values(to_date('20120723', 'yyyymmdd'), 9999999.7777);
SELECT d.the_day, NVL(s.pes, 0) AS pes
FROM ( SELECT to_date('20120720', 'yyyymmdd') + level -1 AS the_day
FROM dual CONNECT BY level <= 4) d
LEFT OUTER JOIN my_summary s ON (d.the_day = s.the_day)
ORDER BY 1
THE_DAY PES
--------- ---
20-JUL-12 9999999.9999
21-JUL-12 9999999.8888
22-JUL-12 0
23-JUL-12 9999999.7777 其他rdbms还有其他方法来生成序列。这将要求您知道所需的开始日期和记录数(在上面的示例中为20120720和4)。
Stack Overflow用户
发布于 2012-08-02 20:08:11
感谢所有人，最后我做到了这一点，并且它工作了。
SELECT
c.BUDAT AS DATA,
CASE When SAP.pes Is Null then '0'
ELSE SAP.pes
END
From
erp.YSD_CALENDAR as c LEFT JOIN
(SELECT
erp.MKPF.BUDAT,
Sum(
erp.MSEG.MENGE
* erp.MARM.BRGEW ) as pes
FROM
erp.MKPF
INNER Join erp.MSEG on erp.MKPF.MANDT = erp.MSEG.MANDT and erp.MKPF.MBLNR = erp.MSEG.MBLNR
INNER Join erp.MARM on erp.MSEG.MANDT = erp.MARM.MANDT and erp.MSEG.MATNR = erp.MARM.MATNR And erp.MSEG.MEINS = erp.MARM.MEINH
INNER JOIN erp.MARA on erp.MSEG.MANDT = erp.MARA.MANDT and erp.MSEG.MATNR = erp.MARA.MATNR
WHERE
erp.MKPF.MANDT = '100'
and erp.MKPF.BUDAT >= '20120720'
and erp.MSEG.LGORT in ('1001','1069')
and erp.MSEG.BWART In ('101','102','311','312')
and erp.MSEG.WERKS = '1001'
and erp.MARA.MTART in ('Z001','Z010','Z002','Z02E')
and erp.MSEG.SHKZG = 'S'
GROUP BY erp.MKPF.BUDAT
) SAP ON SAP.BUDAT = c.BUDAT
WHERE
c.BUDAT >= '20120720'
and c.BUDAT <= CONVERT(VARCHAR(8), GETDATE(), 112)
GROUP BY c.BUDAT, SAP.pes
ORDER BY c.BUDAT页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/11611040
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