sql - Simple select with trick

Question

I need to write a select which will list all of the Clients however here is trick if client has status 1 or 2 it should mark this client with * before name. It should looks like

  Vasya Pupkin 
* Masha Pupkina

select looks like

select FirstName + ' '+ LastName, Address, DOB
from Clients 
Order By FirstName 

that means Masha is active client. Spend almost 2 hours for searching in internet but cannot find anything useful. Because of that asking question here.

Answer 1

ステータスフィールドを確認するには、CASE構造の使用に依存する必要があります。

SQLFiddleのサンプルデータでこの完全に機能するコードを確認してください

SELECT (CASE
             WHEN status IN (1, 2) THEN '* '
             ELSE ''
        END) + FirstName + ' '+ LastName as Client_List
  FROM Clients
 ORDER BY FirstName

データ：

[id]  [status]  [FirstName]  [LastName]
 1        3        Vasya       Pupkin
 2        2        Masha       Pupkina
 3        3        Sasha       Alexeivich
 4        1        Katya       Alexeivna

結果：

CLIENT_LIST
* Katya Alexeivna
* Masha Pupkina
Sasha Alexeivich
Vasya Pupkin

痛い編集 ！遅すぎる、muhmudの答えは正しい

Answer 2

select (case when status in (1, 2) then '* ' else '' end) + FirstName + ' '+ LastName, Address, DOB
from Clients 
Order By FirstName