如果使用Case函数,SQL代码如下: SELECTSUM(population),CASEcountryWHEN'中国'THEN'亚洲'WHEN'印度'THEN'亚洲'WHEN'日本'THEN'亚洲'WHEN'美国'THEN'北美洲'WHEN'加拿大'THEN'北美洲'WHEN'墨西哥'THEN'北美洲'ELSE'其他'ENDFROMTable_AGROUPBYCASEcountryWHEN'中国'THEN'亚洲'WHEN'印度'THEN'亚洲'WHEN'日本'THEN'亚...
MSSQL case when 参考链接 https://www.cnblogs.com/kevin2013/archive/2010/07/02/1769682.html case when 有两种方式,一个是分支判断,一个是搜索函数。 1.分支选择函数 select(case('a')when'a'then'aa'when'b'then'bb'else'无'end) 测试 2.搜索函数 等待补充...
MSSQLCasewhen用法 MSSQLCasewhen⽤法 标签: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 CASE WHEN sex = '1'THEN'男'WHEN sex = '2'THEN'⼥'ELSE'其他'END 这两种⽅式，可以实现相同的功能。简单Case...
mssqlsqlserver如何编写casewhen多条件呢？摘要:下⽂讲述case when中多条件的编写⽅法，如下所⽰:实验环境:sql server 2008 R2 case when 多条件编写⽅法 case when多条件编写语法：case when 条件1 and 条件2 then '1'when 条件1 and 条件2 then '1'else end case when 多条件编写举例 create table...
WHEN price BETWEEN 10 and 20 THEN 'Average' ELSE 'Gift to impress relatives' END GO ORDER BY 的Case when SELECT CASE WHEN price IS NULL THEN 'Unpriced' WHEN price < 10 THEN 'Bargain' WHEN price BETWEEN 10 and 20 THEN 'Average' ...
when 条件1 and 条件2 then '1' else end case when 多条件编写举例 create table [maomao365.com](keyId int identity, xingBie varchar(100) )goinsert into [maomao365.com](xingbie)values('1'), ('0'),('1') ,('1'),('2')goselect keyId,case when xingBie ='1' or xingBie ='2'...
SELECT FirstName, Lastname, TelephoneNumber, IIf(IsNull(TelephoneInstructions),"Any time", TelephoneInstructions) AS [When to Contact]FROM db1.ContactInfo 以下示例使用 CASE 为 AdventureWorks 视图中的 TelephoneSpecialInstructions 列提供输出值，该视图名称为 Person.vAdditionalContactInfo。USE ...
MS SQL的CASE...WHEN...THEN...END语法,根据多个可能的答案检查一个值或变量。举例说明:SELECT[type],CASE[type]WHEN'TT'THEN'TYPE_TABLE'WHEN'FN'THEN'SQL_SCALAR_FUNCTION'WHEN'C'THEN'CHECK_CONSTRAINT'W
第二个case 语句差一个else.
CASE WHEN 语句用于根据条件执行不同的操作。它的语法如下：CASE WHEN condition1 THEN result1 ...