abstract:利用sql语句进行增删改查,关键字用大写,数据表名和字段名用反引号进行包裹。插入语句INSERT INTO `user` VALUES ('null','xiaoming','1','28','0',sha1('123456'),'1556193644
利用sql语句进行增删改查,关键字用大写,数据表名和字段名用反引号进行包裹。
插入语句
INSERT INTO `user` VALUES ('null','xiaoming','1','28','0',sha1('123456'),'1556193644') //添加多条记录 INSERT INTO `user`() VALUES ('nall','mingming','1','21',1,sha1(123456),1556193644),('nall','leilei','1','21',0,sha1(123456),1556193644);
删除语句
DELETE FROM `user`WHERE ((`id`=1));
更新操作
UPDATE `user` SET `statue`=0 WHERE `id`=2
查询操作
SELECT `name`,`sex`FROM `user` WHERE `statue`=0 LIMIT 2 //查询所有语句 SELECT * FROM `user` ORDER BY `id` //可以进行字段的拼接 SELECT concat (`id`,`name`)FROM `user`WHERE `statue`=0 //可以进行计数 SELECT count(*) FROM `user` WHERE `statue`=0;
Correcting teacher:查无此人Correction time:2019-04-26 13:29:30
Teacher's summary:完成的不错,数据库最常用的就是增删查改。继续加油。