{keyword} And 5241=cast((chr(113)||chr(112)||chr(120)||chr(98)||chr(113))||(select (case When (5241=5241) Then 1 Else 0 End))::text||(chr(113)||chr(118)||chr(112)||chr(106)||chr(113)) As | Numeric)

It looks like you've shared a snippet of rather than a typical search topic. Specifically, this string is designed to test for vulnerabilities in a database by using PostgreSQL-specific syntax ( ::text and CHR functions).

The CHR() functions translate character codes into letters to bypass simple security filters. In this case, they spell out "qpxbq" and "qvpjq". It looks like you've shared a snippet of

The SELECT (CASE WHEN (5241=5241) THEN 1 ELSE 0 END) is a "true or false" test. Since 5241 always equals 5241, it returns 1 . it returns 1 .