Multiple rows to one row query

Question

On my database when i do this query:

SELECT *
FROM users u
LEFT JOIN usersToStrategy uts on uts.userID = u.userID
LEFT JOIN strategy s on uts.stratID  = s.st         


        

Answer 1

I think you are looking for GROUP_CONCAT

SELECT userID, username, fName, GROUP_CONCAT(stratNames SEPARATOR ', ') AS strats
FROM users u
LEFT JOIN usersToStrategy uts on uts.userID = u.userID
LEFT JOIN strategy s on uts.stratID  = s.stratID  
GROUP BY userID, username, fName

Answer 2

You use GROUP_CONCAT.

Answer 3

Use GROUP_CONCAT like this

SELECT userID,
username,
fName,   
GROUP_CONCAT(stratNames)
FROM users u
LEFT JOIN usersToStrategy uts on uts.userID = u.userID 
LEFT JOIN strategy s on uts.stratID  = s.stratID   
GROUP BY username;