介绍
select * from 表 cluster by 列
是一个简写方式,等价于
select * from 表 distribute by 列 sort by 列
注意:
2个列必须相同
sort by 列必须是升序
例子
select ename,deptno,sal from emp cluster by deptno ;
等同下面sql:
select ename,deptno,sal from emp distribute by deptno sort by deptno;
sort by deptno 必须是升序