php - How to check if a mysql column is not NULL? -


i track if 'an artist' mysql. if user artist artist column goes null y, have part sorted. however, cannot work out how check if artist column user y can disable features user. site uses cookies logins need have query check y username , password equal cookie. when artist = y content should shown.

here's have far:

$username = $_cookie['username'];  $pass = $_cookie['password'];  include ("../database.php");  if (mysql_query("select artist members username='$username' ,        artist = 'y'")) {      //artist specific content goes here    echo '<div class="bubble"><h1>artist</h1><div class="innerbubble">some text</div></div>';  }

no idea now.

 //artists if    $username = $_cookie['username'];     $pass = $_cookie['password'];     include ("../database.php");    $result = mysql_query("select artist members username='$username' , artist = 'y'");    $count = mysql_num_rows($result);    // check total count artist        if ($count > 0) {      //artist specific content goes here         echo '<div class="bubble"><h1>artist</h1><div class="innerbubble">hi there, see       yo artist have access loads of awesome features. contact ease, upload new tracks, share street sessions , tell latest gigs.</div></div>';     }

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