case when 多条件查询

代码如下：

SELECT     ACCOUNT_NO AS baseAcctNo, 'CNY' AS ccy,
                  (CASE
                           WHEN CHECK_STATUS = '0' AND REPORT_CHECK = '0' THEN '03'
                           WHEN CHECK_STATUS IN ('2', '4') AND REPORT_CHECK = '0' THEN '02'
                           WHEN CHECK_STATUS = '1' AND REPORT_CHECK = '1' THEN '01'
                   END) AS asFlag,
                   CHECK_REPORT_DATE AS asDate
FROM         T_ACCOUNT_INFO