$sql = "SELECT Link,\n"
. "COUNT(Link) AS NumOccurrences\n"
. "FROM Web2\n"
. "GROUP BY Link\n"
. "HAVING ( COUNT(Link) > 1 )";
$sql = 'SELECT `Link`,COUNT(Link) AS NumOccurrences FROM `Web2` GROUP BY `Link` HAVING ( COUNT(Link) > 1 )';
or die(mysql_error());

