How to create and enforce indexes

How to create and enforce indexes

■ grammar

◆ Create index

creat index index_name on table_name(column_name);

◆ Enforce index queries
• stay SQLite in ：

select * from table_name( Create indexed tables ) indexed by index_name 
where condition

• stay Mysql in ：

select * from table_name( Create indexed tables )FORCE INDEX ( Index name ) 
where condition