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[英]How to name two columns in join tables with two same foreign key at one table in SQL?
[英]How to join two SQL tables with same columns name with different ids in one single row?
id location code
1 Bangalore BN
2 Chennai CH
3 Kochi KH
slno first_loc Second_loc
1 1 2
3 3 1
如何在 MySQL 中加入这两个表
只需使用别名,我假设您的第一个表名为location
,第二个表名为route
因为您没有提供表的名称
Select slno, a.location, b.location from route
left join location as a on route.first_loc = a.id
left join location as b on route.second_loc = b.id
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