CASE语句是一种在编程中常用的条件语句,用于根据不同的条件执行不同的操作。然而,当出现错误时,可能是由于以下几个原因导致的: 1. 语法错误:在编写CASE语句时,可能会出现语法错误,例如缺少括号...
SELECT count(*) AS constructionProject, -在建项目数量 sum(CASE WHEN LEFT(CONVERT(VARCHAR,start_date,23),4) = DateName(year,GetDate()) THEN 1 ELSE 0 END) AS startThisYear, -今年开工数量 sum(CASE WHEN LEFT(CONVERT(VARCHAR,end_date,23),4) = DateName(year,GetDate()) THEN ...
我有以下 SQL 查询(在 PostgreSQL 中),并且不断收到语法错误。SELECT data1, data1_class CASE WHEN data1 LIKE '%Bookmarked Removed%' THEN 'Class I' ELSE 'Class II' END AS data1_class from events WHERE event_code = 11 Run Code Online (Sandbox Code Playgroud) 我得到的语法错误是:...
scala中的case语法与java中的switch语法类似,但比switch更强大: 例子一正则匹配: val Pattern="(s.*...
worker.姓名 后缺一个逗号:select worker.职工号,worker.姓名,case depart.部门名 when '财务部' then '管理部门'when '人事部' then '管理部门'when '市场部' then '市场部门'end as '部门类型'from worker,depart,salary where depart.部门号=worker.部门号 ...
(select count(*) from hocm_project where work_status='在建' and org_id in ( SELECT id from sys_org where parent_id ='16b2a96f9b04428f8f9aca3b04b947e0' )) AS constructionProject, -在建项目 sum(CASE LEFT(CONVERT(VARCHAR,start_date,23),4) WHEN DateName(year,GetDate()) THEN 1 ELS...
不要写case salary,而是case when salary.因为后边是大于小于的条件,所以不能case salary 如果case salary,when要这么写 when 5000 then '' when 10000 then ...后边就是salary的具体情况,而不是判断式了。select count(*) as 人数 case when salary>4000 and salary<=5000 then '高薪'wh...
s2 = @s2 + name+'=sum(case when name = '''+name+''' then 分数2 else 0 end), ',s3 = @s3 + name+'=sum(case when name = '''+name+''' then 分数3 else 0 end), 'from(select distinct name from tt ) a --整理构建后的字段变量 set @s1 = '''分数1'' as ...
salary>4000 or salary<=5000 注意是or group by ‘等级'
您组合了两种不同形式的CASE语句。您可以这样简化它,因为您在每种情况下都比较相同的表达式:...