1添加信息:
//添加一个国家:中国;
insert into table_name(name) values ('china');
2.修改表内数据
update table_name set item1=value1 where condition;
3.删除表中数据:
delete from table_name where condition;
4.1查询表内所有数据:
select * from table_name;
4.2查询指定条件数据:
select * from country where condition;
4.3查询前n条数据:
select * from table_name limit n;
4.4跳过前m条,查询后面的n条数据:
select * from table_name limit m,n;
4.5查找不包含condition的数据:
select * from table_name where id <> 1;
4.6查找既满足条件A,又满足条件B的数据:
select * from table_name where id between A and B;
4.7查找满足条件A或者满足条件B的0数据:
select * from table_name where condition1 or condition 2;
4.8查找数据在条件(a->b之间)的数据:
select * from table_name where id in(a,b);
4.9模糊查询:
select * from table_name where name like 'A%';
select * from table_name where name like 'A_';
5.1.表内数据倒序排序
select * from country order by id desc;
5.1.表内数据正序排序
select * from country order by id ;
2018.4.24
TonyChen
一个人熬过了所有苦难,也就不在期待一定要和谁在一起了。努力过,但结局我不想说。