douhuifen9942 2018-11-02 07:51
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如何在mysql中连接两个表记录

I want to join two tables ,

booking table
id from_branch to_branch
1     2            4
2     3            4

Branch Table
 id    name
 1     pune
 2     mumbai
 3     nanded
 4     parbhani
 5     aurangabad

As above tables show , I joint them with the id common in both tables ( from_branch , to_branch )

My Query:

SELECT booking.id,
       booking.from_branch,
       booking.to_branch,
       branch.branch_id,
       branch.branch_name AS "FROM",
       branch.branch_name AS "TO"
FROM   booking
       JOIN branch
         ON booking.from_branch = branch.branch_id
WHERE  booking.from_branch = branch.branch_id
        OR booking.to_branch = branch.branch_id 

how i can get result like

id  from_branch to_branch     FROM      TO
     1     2           4         Mumbai   Parbhani
     2     3           4         Nanded   Parbhani
  • 写回答

2条回答 默认 最新

  • doucan4815 2018-11-02 07:54
    关注

    use join with Branch table twice

     select b.from_branch,b.to_branch, 
     bn.name as from_branch_name,
     bn1.name as to_branch_name
     from booking b  join branch bn 
     on b.from_branch=bn.id
     join branch bn1 on b.to_branch=bn1.id
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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