SQL左加入仅一行

Question

By using this SQL Query:

SELECT pictures.IMAGELINK,userdata.BIRTHDATE,userdata.POSITION,InfiniteLove.USERNAME FROM 
InfiniteLove
LEFT JOIN pictures ON InfiniteLove.USERNAME = pictures.USERNAME
LEFT JOIN userdata ON InfiniteLove.USERNAME = userdata.USERNAME
WHERE NOT InfiniteLove.USERNAME = '".$USERNAME."' AND InfiniteLove.GENDER = 
'M' AND InfiniteLove.SEARCH = 'M' OR InfiniteLove.SEARCH = 'B'

I get this result:

The Problem is, that I only want ONE row from each user. But when the user has more than one picture it is showing multiple rows.

What can I do, that I get only one row from each user?

Thanks

Answer 1

Add a GROUP BY clause

SELECT pictures.IMAGELINK,userdata.BIRTHDATE,userdata.POSITION,InfiniteLove.USERNAME FROM 
InfiniteLove
LEFT JOIN pictures ON InfiniteLove.USERNAME = pictures.USERNAME
LEFT JOIN userdata ON InfiniteLove.USERNAME = userdata.USERNAME
WHERE NOT InfiniteLove.USERNAME = '".$USERNAME."' AND InfiniteLove.GENDER = 
'M' AND InfiniteLove.SEARCH = 'M' OR InfiniteLove.SEARCH = 'B'
GROUP BY InfiniteLove.USERNAME