Mega'/**/and(select'1'from/**/pg_sleep(0))::text>'0 Page

pg_sleep(X) is a Postgres function that pauses the query execution for X seconds.

: SQL comments used as whitespace to bypass input filters, WAF (Web Application Firewall), or sanitization methods. and(select'1'from/**/pg_sleep(0)) : The malicious component. MEGA'/**/and(select'1'from/**/pg_sleep(0))::text>'0

Similar to the PortSwigger Blind SQL Injection lab examples, this structure is used to ask the database boolean questions (e.g., "Does the database name start with 'a'?"). If the page delays, the answer is yes; if it loads immediately, the answer is no. Detection and Mitigation pg_sleep(X) is a Postgres function that pauses the

Use parameterized queries (prepared statements) in the application code, which separate SQL code from user data, rendering input like ' harmless. Similar to the PortSwigger Blind SQL Injection lab

Here is an analysis of this query, often categorized as a "proper" or standard testing article in ethical hacking: Payload Breakdown