It looks like you've provided a common SQL injection payload ( UNION ALL SELECT NULL... ) followed by the initials "DJGP."
: This is SQL shorthand to comment out the rest of the legitimate code, ensuring the injected command runs cleanly. The "DJGP" Element {KEYWORD} UNION ALL SELECT NULL,NULL,NULL-- DJGP
Tools like Sequelize, Eloquent, or Entity Framework handle much of this protection for you by default. The Bottom Line It looks like you've provided a common SQL
The snippet {KEYWORD} UNION ALL SELECT NULL,NULL,NULL-- is a classic attack pattern. NULL-- is a classic attack pattern.