1.添加PRIMARY KEY(主键索引)
alter table `table_name` add primary key ( `column` )
2.添加UNIQUE(唯一索引)
alter table `table_name` add unique ( `column` )
3.添加INDEX(普通索引)
alter table `table_name` add index index_name ( `column` )
4.添加FULLTEXT(全文索引)
alter table `table_name` add fulltext ( `column`)
5.添加多列索引
alter table `table_name` add index index_name ( `column1`, `column2`, `column3` )
原创文章,作者:Maggie-Hunter,如若转载,请注明出处:https://blog.ytso.com/4300.html