SQL Case语句未给出期望的结果

Question

我正在处理sql case语句。我有以下部门： 部门：“ SCV”，“ ICT”，“ SCM”，“ MTH”，“ AAT”，“ ACC”，“ GCSE”

Here's my case statement:

CASE WHEN Dept = 'MTH' AND Course.Name Like 'Func%' THEN 'MTH Func'
            WHEN Dept = 'MTH' AND Course.Name Like 'GCSE%' THEN 'MTH GCSE' 
      ELSE Dept END AS Department

这是我的结果集：

我不希望在结果集中输入MTH。请帮忙。

Answer 1

您需要捕获删除的“ MTH”，然后需要一个条件。您显然在MTH部门所修课程不像“ Func”或“ GCSE”。

也许你想要

(CASE WHEN Dept = 'MTH' AND Course.Name Like 'Func%' THEN 'MTH Func'
      WHEN Dept = 'MTH' AND Course.Name Like 'GCSE%' THEN 'MTH GCSE' 
      WHEN Dept = 'MTH' THEN 'Anything but MTH' 
      ELSE Dept
 END) AS Department

或者您可能想要：

(CASE WHEN Dept = 'MTH' AND Course.Name Like 'Func%' THEN 'MTH Func'
      WHEN Dept = 'MTH' THEN 'MTH GCSE' 
      ELSE Dept
 END) AS Department