EXISTS and NOT EXISTS

[LorenzoR]

What´s wrong with this query?SELECT users_nick FROM users WHERE NOT EXISTS (SELECT users_nick FROM users WHERE users_nick = "admin");It gives me this message error: "ERROR 1064: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'EXISTS (SELECT users_nick FROM users WHERE users_nick = "admin"

[aspnetguy]

Why not just do this

SELECT users_nickFROM usersWHERE users_nick != 'admin'

[LorenzoR]

Why not just do this

SELECT users_nickFROM usersWHERE users_nick != 'admin'

<{POST_SNAPBACK}>

I just put an example because any query that uses EXISTS doesn´t work.The one I am doing is more complicated.