通過命令查看
show index from tbname;
MySQL通過SQL語句查看表的索引：
1、查看數據庫所有索引
SELECT * FROM mysql.`innodb_index_stats` a WHERE a.`database_name` = '數據庫名';
2、查看某一表索引
SELECT * FROM mysql.`innodb_index_stats` a WHERE a.`database_name` = '數據庫名' and a.table_name like '%表名%';