1、show engines;
2、show engines\g;< http://www.2cto.com/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHA+PGltZyBzcmM9"https://www.cppentry.com/upload_files/article/57/1_pdge9__.png" alt="\">
3、show variables like "have%';
4、show variables like "storage_engine';
