选择：select * from table1 where 范围 　　

插入：insert into table1(field1,field2) values(value1,value2) 　　

删除：delete from table1 where 范围 　　

更新：update table1 set field1=value1 where 范围 　　

查找：select * from table1 where field1 like ’%value1%’ 所有包含‘value1’这个模式的字符串 　　

排序：select * from table1 order by field1,field2 [desc] 　　

总数：select count(*) as totalcount from table1 　　

求和：select sum(field1) as sumvalue from table1 　　

平均：select avg(field1) as avgvalue from table1 　　

最大：select max(field1) as maxvalue from table1 　　

最小：select min(field1) as minvalue from table1[separator]