Create mysql index of way

Way to create an index:

1, create index index name on table name (field)

2, alter table add index table index name (field)

 

- General Index
alter table add index table index name (field);
- unique index
alter table table add unique (Field);
- primary key index
alter table table add primary key (field);

 

Delete the index:

 

drop index index name on table