Method open_query_log

sql/log.h:189–198

             ulonglong query_utime, ulonglong lock_utime, bool is_command,
             const char *sql_text, uint sql_text_len);
  bool open_query_log(const char *log_name)
  {
    char buf[FN_REFLEN];
    return open(
#ifdef HAVE_PSI_INTERFACE
                key_file_query_log,
#endif
                generate_name(log_name, ".log", 0, buf),
                LOG_NORMAL, 0, WRITE_CACHE, false);
  }
  int rotate(ulong max_size, bool *need_purge);
  int new_file();