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mysql簡(jiǎn)單的操作

發(fā)表日期：2021-07-21 文章編輯：洛壹網(wǎng)絡(luò) 文章來(lái)源：深圳網(wǎng)站建設(shè)

mysql簡(jiǎn)單的操作

增 insert
insert into t5(username) values('user1');
刪 delete
刪所有
delete from t5;
刪一條
delete from t5 where id=10;
刪除1<=id<=3
delete from t5 where id>=1 and id<=3;
刪除id為1，3，5
delete from t5 where id=1 or id=3 or id=5;
delete from t5 where id in(1,5,3);
改 update
修改所有
update t5 set username='9';
修改一條
update t5 set username='9' where id=9;
修改某一條中的多個(gè)字段的數(shù)據(jù)(用逗號(hào)分開(kāi))
update t5 set username='9'，age=20 where id=9;
查 select
查所有
select * from t5;
查一條數(shù)據(jù)
select *from t5 where id=9;

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