1、查詢：select * from table where 條件
select * from watch.user; // 跨庫查詢，查詢watch庫user表
2、插入：insert into table(字段1，字段2) values(值1，值2)
3、刪除：delete from table where 條件
4、更新：update table set 字段=值 where 條件
5、查找：select * from table where 字段 like ’%value%’
6、排序：select * from table order by 字段 asc(默認)/desc
7、總數：select count(*)/count(字段) from table
8、求和：select sum(字段) from table
9、平均：select avg(字段) from table
10、最大：select max(字段) from table
11、最小：select min(字段) from table