方法/步骤 1 sqlite3也是支持case when语句的，但是我写的select 住院号, case when strftime('%w',出院日期)in (3,4,5,6)And julianday(出科日期)- julianday(出院日期) between 3 and 5 then julianday(出科日期)- julianday(出院日期)-2else julianday(出科日期)- julianday(出院日期) ...
来自StackOverflow , Satya Prakash Panigrahi提出的问题: “ 我正在使用SQLite数据库,我的表有一个text文本列叫Password,之前为了取值我就用了简单的查询Select * from myTable,但是现在需求改成了如果密码不为NULL,Passw
例如 if(activity_type="start",-1*timestamp,timestamp) CASE when activity_type="start"then-1*timestamp when activity_type="end"thentimestampend
The CASE statement in SQLite is a conditional expression that allows you to execute different actions based on specified conditions. It is often used in SELECT queries to compute conditional values, apply transformations, or group data dynamically based on conditions. Syntax CASE WHEN condition1 THEN...
用于case语句的语法,与Sqlite引用完全一样。CASE x WHEN w1 THEN r1 WHEN w2 THEN r2 ELSE r3 END CASE WHEN x=w1 THEN r1 WHEN x=w2 THEN r2 ELSE r3 END Run Code Online (Sandbox Code Playgroud) 我的代码:CREATE TRIGGER ChnState_log AFTER INSERT ON CallLog BEGIN CASE NEW.Dir WHEN 0 ...
order_id,CASEWHENorder_amount>1000THEN'High'WHENorder_amount>500THEN'Medium'ELSE'Low'ENDASorder_priorityFROMorders; 3. 在 WHERE 子句中使用 CASE 使用SQL CASE 语句根据特定条件过滤数据。 代码语言:javascript 代码运行次数:0 运行 AI代码解释
他给的示例SQL如下： select HName,case when IsEnable=1 then '启用' else '停用' from tb_User ...
sqlite中case语句的应用 题目大意:将学生选课表中的成绩(用A,B…划分等级)转换成绩点的形式,并求出学号为12345的学生的总绩点; 考查的主要知识点:case when 语句; (1)我先把每个学生的总绩点求出来,如下图: (2)求学号为“12345”的学生的总绩点,如下:......
Sqlite3之case分支语句(13) SELECT case when abitmap=0 then '零' when abitmap=1 then '壹' else '贰' end as bitmap from userinfo 1. 2. 3. 4. 5. 6. 记得别忘了END select aaa.aName , sum( case aaa.aMonth when 1 then aaa.aProductSum end ) as '一月'...
When I run this SELECT, SELECT a.a, a.c, a.e, b.g, b.h, b.i, ( CASE ( SELECT WYear FROM t2 WHERE pid = a.a ) WHEN c.WYear = 2020 THEN “YES” ELSE “NO” END ) AS DIGITAL FROM t0 as a, t1 as b, t2 as c ...