title: SQL with parameter and wildcard
body: <p>simply want to run an SQL statement that takes a letter(s) entered into a textbox and returns results where names of books have the same first letter(s). E.g. if H is entered, then books such as 'Happy Days','Heaven', 'Hoping for Tomorrow' would be returned. Here is what I have used, but i get no results in my DBgrid.  The textbox into which the letter is entered is edtBookTitle.text.</p>
  <pre><code>qbook.SQL.Text:='SELECT BookID,BookTitle FROM Book WHERE BookTitle LIKE edtBookTitle.text%';
  </code></pre>