By 1#: -2563) Order

: This is used to close a parenthesis that might exist in the original, legitimate query's code.

The phrase ") ORDER BY 1#" is not a topic for a review, but rather a classic example of a payload used by security researchers and attackers to test for vulnerabilities in web applications. What is SQL Injection? -2563) ORDER BY 1#

If you are a website owner and see this in your logs or reviews, it is a sign that someone is testing your site's security. You should ensure your code uses or parameterized queries to prevent these attacks from succeeding. : This is used to close a parenthesis