SQL语句查询排序,顺序和倒序
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SELECT Company, OrderNumber FROM Orders ORDER BY Company DESC , OrderNumber ASC # ASC 升序, DESC 倒序 |
SQL查询结果排序
1.以指定顺序返回查询结果(order by的asc为升序,desc为降序)
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select ename,job,sal from emp where deptno = 10 order by sal asc |
2.多字段排序
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select empno,deptno,sal,ename,job from emp order by deptno,sal desc |
3.依据子串排序(SQL Sever使用substring(),其它用substr,而substr只有两个参数)
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select ename,job from emp order by substring (job,len(job)-2,2) |
4.排序时对null值处理
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select ename,job,comm from emp order by 3 |
5.依据条件逻辑动态调整排序项
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select ename,sal,job,comm from emp order by case when job = ‘SALESMAN' then comm else sal end |
以上为个人经验,希望能给大家一个参考,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/ZUFE_ZXh/article/details/86679050