在 CASE WHEN THEN ELSE 中使用 IN 和逗号

Question

我想在 IN 语句中使用 'CASE WHEN THEN ElSE'。但它不像你在下面看到的那样工作。

join notes n
            on n.note_id=cp.note_id
            and n.stamp_dat>=@date_from
            and n.stdnote_code in(case when @country='NO'
                then ('81','82','84','85','86','90','91')
                else ('86','87') end)

Answer 1

and 
(
    @country ='NO' and n.stdnote_code in ('81','82','84','85','86','90','91')
    OR 
    @country<>'NO' and n.stdnote_code in ('86','87')
)

Answer 2

join notes n 
         on n.note_id=cp.note_id
         and n.stamp_dat>=@date_from
         AND
            ( 
              (n.stdnote_code IN ('81','82','84','85','86','90','91') AND @country='NO')
              OR 
              (n.stdnote_code IN ('86','87') AND @country <> 'NO')
             )