How to generate random alphanumeric unique characters with specified length
<p>Problem is described below:</p>

<ol>
<li>Generate a unique alphanumeric characters.</li>
<li>Length of characters should be 32.</li>
<li>Unique numbers may be seeded in the current time to help in the uniqueness of the generated numbers.</li>
<li>Alphabet characters must come from this pool: <code>abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ</code></li>
</ol>

<p>Sample Output: <code>445rpxlKYPkj1pg4q8nAy7Ab91zxZ8v1</code></p>

<p>I can do this using Java, but will greatly appreciate if you could help me do this on MS SQL or T-SQL.</p>