方法一:通过MySQL的information_schema数据库 查找重复与冗余索引
SELECT a.table_schema AS ‘数据库‘, a.table_name AS ‘表名‘, a.index_name AS ‘索引1‘, b.index_name AS ‘索引2‘, a.column_name AS ‘重复列名‘ FROM information_schema.statistics a JOIN statistics b ON a.table_schema = b.table_schema AND a.table_name = b.table_name AND a.seq_in_index = b.seq_in_index AND a.column_name = b.column_name WHERE a.seq_in_index = 1 AND a.index_name != b.index_name
方法二:通过工具
用pt-duplicate-key-checker 工具检查重复及冗余索引 使用方法 pt-duplicate-key-checker -hxxx -uxxx -pxxx
查找重复与冗余索引
参考慕课网:http://www.imooc.com/video/3998
时间: 2024-10-04 06:28:34