ORDER BY column1 DESC, column2 首先按照column1(降序)排序,然后每当两行或更多行的column1字段相同时,默认情况下按照column2(升序)排序。 - Ignacio Vazquez-Abrams 4 如何按列1或列2排序? - PoliDev 1 @PoliDev,它首先按照列1的降序排序,然后按照列2(升序)排序。 - zaheer 177 为了清晰明了,这将首先...
OR ） CASE WHEN sex = ‘1’ THEN ‘男’ WHEN sex = ‘2’ THEN ‘女’ ELSE ‘其他’ END...
点击查看代码 -- 第一种写法select*from[your_table_name]orderbycasewhen@sort='desc'thenIDenddesc,--如果这两个case when 写的是不同的字段,表示有多级排序casewhen@sort<>'desc'thenIDendasc-- 第二种写法select*from[your_table_name]orderbycasewhen@sort='desc'then-IDelseIDend--ID这个字段是INT ...
from > on > join > where > group by > having > select > order by > limit Case When 当我们需要从数据源上 直接判断数据显示代表的含义的时候 ,就可以在SQL语句中使用 Case When这个函数了. Case具有两种格式。简单Case函数和Case搜索函数。 第一种 格式 : 简单Case函数 : 格式说明 代码语言:javascrip...
pd df=pd.read_excel(r'C:\Users\尚天强\Desktop\数据合并.xlsx') #重命名 df.rename(columns=...
+ ORDER BY `status` ASC, + CASE WHEN `status` = 1 THEN `start_date` END DESC, + CASE WHEN `status` = 3 THEN `end_date` END DESC; + ``` + + # 参考 + + - [ORDER BY 高级用法之CASE WHEN](https://www.cnblogs.com/178mz/p/6428958.html) + -...
MAX(intime) FROM a_current_per_entry_01) ORDERBYhourASC,CASE WHENentry ='东1入口'THEN1 WHENentry ='西门入口'THEN2 WHENentry ='东南入口'THEN3 WHENentry ='正南入口'THEN4 WHENentry ='西南入口'THEN5 END; ,博客记录生活,技术改变生活
我有个办法，但是感觉有点low···就是原数据表中union all 上 select ‘yh’，0 from dual和之后的那几个，然后括号扩上作为一个大表二字段分组求和一下在排序，这样能达到你要的效果，不知道有没有更好的方法
Multiple sort columns can be specified. Column names must be unique. The sequence of the sort columns in theORDER BYclause defines the organization of the sorted result set. That is, the result set is sorted by the first column and then that ordered list is sorted by the second column, ...
Multiple sort columns can be specified. Column names must be unique. The sequence of the sort columns in theORDER BYclause defines the organization of the sorted result set. That is, the result set is sorted by the first column and then that ordered list is sorted by the second column, ...