Is this sql query even acceptable?

Question

another dumb question to brighten your day. I have this MySql query and, yes, it doesn't shown any result. What's wrong here? Is it the AND or the ORDERBY? hmmm...

 SELECT * FROM statisticData WHERE SYear LIKE '$SYr' AND accessDate BETWEEN '$startDate' AND '$endDate' ORDER BY accessDate DESC

Oh, this is what comes before the query:

   $SYr = $_POST['SYr'];
   $startDate = date("m-d-Y", strtotime($_POST['Date1']));
   $endDate   = date("m-d-Y", strtotime($_POST['Date2']));

Answer 1

Dates in MySQL must be in Ymd format. mdY is not acceptable and will not return any rows.

Also:

Escape your inputs. Its okay for the date ones because you're handling them already and the output is a PHP-generated date. But $SYr is currently unsafe.