查询
select * from table;/全部查询
select * from table where '字段' like '%aaa%';/模糊查询
select * from table order by '字段' desc/asc;/按升降排序
select COUNT(*) from news;/查询共多少条记录
插入
insert into table values('','','','');/插入一条记录
修改
update table set `字段`="修改内容" where `id`=number;/修改一条记录
删除
delete from table where `id`=number;/删除一条记录
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