This is a comprehensive SQLi exploitation reference that goes well beyond basic UNION and error-based attacks. It covers database-specific blind inference techniques, out-of-band exfiltration through DNS, HTTP, and SMB channels, and second-order injection patterns across MySQL, MSSQL, Oracle, and PostgreSQL. The routing is smart: it links to a ghost-bits-cast attack for bypassing WAFs when you're hitting Java backends with Jackson, and splits advanced material into separate scenario and sqlmap docs you can load on demand. The first-pass payload table and DBMS fingerprinting section alone will save you from fumbling through trial and error. If you're doing actual penetration testing or need to explain modern SQLi techniques beyond the OWASP top ten basics, this gives you the tactical depth.
npx skills add https://github.com/yaklang/hack-skills --skill sqli-sql-injection