mysql table join problem
table: user
id name
-------------
1 john
2 开发者_Python百科paul
3 mattew
table: nickname
id user_id nickname
--------------------------
1 1 frog
2 1 cow
3 1 bull
4 2 cat
Result I want:
1 john frog cow bull
2 paul cat
3 mattew
How can I get this result?
Something like this should work:
SELECT u.id, u.name, GROUP_CONCAT(n.nickname, ' ') AS nickname
FROM user u
LEFT JOIN nickname n ON u.id = n.user_id
GROUP BY u.id, u.name
Please Note: syntax for GROUP_CONCAT may not be perfect because I haven't used it in a while
Use mysql aggregate functions: Group concat will do the trick for you.
http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html#function_group-concat
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