I'm building a WSGI web app and I have a MySQL database. I'm using MySQLdb, which provides cursors for executing statements and getting results. What is the standard practice for getting and cl...
Engnish:
Yesterday when I was young
The taste of life was sweet like rain upon my tongue
I teased at life as if it were a foolish game
The way an evening breeze would tease a candle flame
The thousand...
As a conclusion to this course about RxJS subjects, let's review when and why should you use them. For certain cases, subjects are absolutely necessary. If we map to random numbers and we wish two or...
1. CASE WHEN 表达式有两种形式--简单Case函数 CASE sex WHEN '1' THEN '男' WHEN '2' THEN '女' ELSE '其他' END --Case搜索函数 CASEWHEN sex = '1' THEN '男' WHEN sex = '2' THEN '女' ELSE '其他' END2...
sql case when then else end
case具有两种格式。简单case函数和case搜索函数。
--简单case函数
case sex
when'1'then'男'
when'2'then'女'
else'其他'end
--case搜索函数
casewhen sex = '1'then'男'
when ...
