Sql server h如何在示例中加入true?
我的以下查询没有给出预期结果:Sql server h如何在示例中加入true?,sql-server,sql-server-2008,join,outer-join,self-join,Sql Server,Sql Server 2008,Join,Outer Join,Self Join,我的以下查询没有给出预期结果: SELECT "invoice"."ITEMNO", "invoice"."Outgoing", "storeage"."incoming" FROM "MVXJDTAP"."MVXJDTA"."invoice" INNER JOIN "MVXJDTAP"."MVXJDTA"."storeage " ON "invoice"."ITEMNO" = "storeage"."itemno" ORDER BY"storeage"."itemno
SELECT "invoice"."ITEMNO",
"invoice"."Outgoing",
"storeage"."incoming"
FROM "MVXJDTAP"."MVXJDTA"."invoice"
INNER JOIN "MVXJDTAP"."MVXJDTA"."storeage "
ON "invoice"."ITEMNO" = "storeage"."itemno"
ORDER BY"storeage"."itemno"
Tables:
invoice
itemno Outgoing
ZOMV3-94 4
ZOMV3-94 7
storeage
itemno incoming
ZOMV3-94 3
ZOMV3-94 1
ZOMV3-94 60
ZOMV3-94 5
查询将给出以下结果:
itemno outgoing incoming
ZOMV3-94 4 3
ZOMV3-94 4 1
ZOMV3-94 4 60
ZOMV3-94 4 5
ZOMV3-94 7 3
ZOMV3-94 7 1
ZOMV3-94 7 60
ZOMV3-94 7 5
select itemno,
outgoing,
null as incoming
from invoice
union all
select itemno,
null,
incoming
from storeage;
但我想得到以下真正的结果:
ZOMV3-94 4 NULL OR 0
ZOMV3-94 7 NULL OR 0
ZOMV3-94 NULL OR 0 3
ZOMV3-94 NULL OR 0 1
ZOMV3-94 NULL OR 0 60
ZOMV3-94 NULL OR 0 5
我怎样才能得到这个结果 您可以使用
UNION ALL
而不是JOIN
来获得结果:
itemno outgoing incoming
ZOMV3-94 4 3
ZOMV3-94 4 1
ZOMV3-94 4 60
ZOMV3-94 4 5
ZOMV3-94 7 3
ZOMV3-94 7 1
ZOMV3-94 7 60
ZOMV3-94 7 5
select itemno,
outgoing,
null as incoming
from invoice
union all
select itemno,
null,
incoming
from storeage;
看。这就产生了一个结果:
| ITEMNO | OUTGOING | INCOMING |
----------------------------------
| ZOMV3-94 | 4 | (null) |
| ZOMV3-94 | 7 | (null) |
| ZOMV3-94 | (null) | 3 |
| ZOMV3-94 | (null) | 1 |
| ZOMV3-94 | (null) | 60 |
| ZOMV3-94 | (null) | 5 |
您可以使用
UNION ALL
而不是JOIN
来获得结果:
itemno outgoing incoming
ZOMV3-94 4 3
ZOMV3-94 4 1
ZOMV3-94 4 60
ZOMV3-94 4 5
ZOMV3-94 7 3
ZOMV3-94 7 1
ZOMV3-94 7 60
ZOMV3-94 7 5
select itemno,
outgoing,
null as incoming
from invoice
union all
select itemno,
null,
incoming
from storeage;
看。这就产生了一个结果:
| ITEMNO | OUTGOING | INCOMING |
----------------------------------
| ZOMV3-94 | 4 | (null) |
| ZOMV3-94 | 7 | (null) |
| ZOMV3-94 | (null) | 3 |
| ZOMV3-94 | (null) | 1 |
| ZOMV3-94 | (null) | 60 |
| ZOMV3-94 | (null) | 5 |
这与我使用的路线相同,谢谢,但当我加入表3时,我无法添加另一个表(产品DT),所以请添加描述CULOMN@BelalIt请发布一个关于添加新表的详细信息的新问题。我想使用另一个表ZOMV3-94 4 ZOOM Lkyths这与我使用的路线相同谢谢,但当我加入表3时,我无法添加另一个表(产品DT.)因此添加描述CULOMN@BelalIt请发布一个新问题,详细说明如何添加新表。我想使用另一个表ZOMV3-94 4 ZOOM Lkywy为什么要将“表”和“列”名称“全部”放在“引号”中?似乎没有很好的理由-除非您的意图是使代码极难阅读。为什么要将“表”和“列”名称“全部”放在“引号”中?似乎没有很好的理由-除非您的意图是使代码极难阅读。