django-rawsql.py

def rawsql(queryset):
    compiler = queryset.query.get_compiler(using=queryset.db)
    sql, params = compiler.as_sql()
    with compiler.connection.cursor() as cursor_wrapper:
        cursor = cursor_wrapper.cursor
        cursor_type = str(type(cursor)).lower()
        if 'psycopg2' in cursor_type or 'pymysql' in cursor_type:
            return cursor.mogrify(sql, params)
        elif 'mysqldb' in cursor_type:
            db = cursor._get_db()
            if isinstance(params, dict):
                return query % {k: db.literal(v) for k, v in params.items()}
            else:
                return query % tuple(map(db.literal, params))