MySql的更新

###MySql的更新

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select* from emp;

select * from dept1;

#####查询语句

update emp a,dept b set a.sal=a.sal*b.deptno,b.deptname=a.ename where a.deptno=b.deptno;

#####删除记录

·delete from emp where ename=‘dony‘;

#####查询部分字段

select ename,hiredate,sal,deptno from emp;

#####查询不重复的字段

select distinct deptno from emp;

#####条件查询

select * from emp where deptno=1;

select * from emp where deptno=1 and sal<3000;

MySql的更新

原文：http://www.cnblogs.com/xiuxiu123/p/5064221.html