循环有关问题－－HELP
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2022-05-01 13:33:24
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循环问题－－HELP
求教：
表1：
db_1
fid
fup
name
---------------
表2：
db2
fid
subject
---------------
fid（表db_1）＝fid（表db_2）
--------------------------------
我是想循环列出表1中 fup＝0 的name以及跟name相关的subject。
————————————————————————
|
| name1 | name2 | name3 | name4
|subject subject subject subject
|subject subject subject subject
|subject subject subject subject
|subject subject subject subject
|subject subject subject subject
|subject subject subject subject
|
------解决方案--------------------
select db_1.name,db_2.subject from db_1,db_2 where db_1.fid=db_2.fid and db_1.fup=0
group by db_1.name,db_2.subject
求教：
表1：
db_1
fid
fup
name
---------------
表2：
db2
fid
subject
---------------
fid（表db_1）＝fid（表db_2）
--------------------------------
我是想循环列出表1中 fup＝0 的name以及跟name相关的subject。
————————————————————————
|
| name1 | name2 | name3 | name4
|subject subject subject subject
|subject subject subject subject
|subject subject subject subject
|subject subject subject subject
|subject subject subject subject
|subject subject subject subject
|
------解决方案--------------------
select db_1.name,db_2.subject from db_1,db_2 where db_1.fid=db_2.fid and db_1.fup=0
group by db_1.name,db_2.subject
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