search all in same query

[chuppe]

table (book) ==> (keyid,name)\[code\]<form action="se.php"> <select> <option value="http://stackoverflow.com/questions/13703490/1">book1</option> <option value="http://stackoverflow.com/questions/13703490/2">book2</option> <option value="http://stackoverflow.com/questions/13703490/3">book3</option> <option value="http://stackoverflow.com/questions/13703490/????">All Book</option> </select><input type="submit" name="search" value="http://stackoverflow.com/questions/13703490/search"></form>//se.php $keyid=$_GET[keyid]; $sql=mysql_query("SELECT `name` FROM `book` WHERE `keyid`='$keyid'");//end page\[/code\]what i put in last option value (????) for sql query search all content???