[T-SQL]判斷查詢無資料時處理

IF EXISTS
    (SELECT NAME FROM SI_DEPT_VIEW WHERE ID = LEFT('$sys_userCaption$',4))
    BEGIN
        SELECT NAME FROM SI_DEPT_VIEW WHERE ID = LEFT('$sys_userCaption$',4)
    END
ELSE
    BEGIN
     SELECT '查無資料，請洽管理員'
    END