T-SQL Case 嵌套 Case

SELECT JournalEntryId,       JournalEntryNo,       CapitalChain,       DataSource,       EntrySummary,       AccountSubject,       CASE AccountSubject         WHEN '应付账款' THEN '卡门网供应商'         WHEN '应收账款' THEN '卡门网客户'         WHEN '预收账款' THEN ( CASE                              WHEN JournalEntryNo LIKE 'API%' THEN 'API预收客户款'                              WHEN JournalEntryNo = 'CSC004' THEN 'CSC预收客户款'                              WHEN JournalEntryNo = 'CSC005' THEN '卡门网预收客户款'                              WHEN JournalEntryNo LIKE 'KYS%' THEN '卡吧零预收客户款'                              WHEN JournalEntryNo LIKE 'ZH%' THEN '卡门网预收客户款'                              WHEN JournalEntryNo LIKE 'ZJC%' THEN '卡门网预收客户款'                            END )         ELSE ''       END AS AccountSubjectDetail,       DebitAmount*-1 AS DebitAmount,       CreditAmount*-1 AS CreditAmount,       OffsetCategory,       CustomerSiteType,       BusinessTypeId,       JournalEntryTime,       InputTimeFROM   dbo.JournalEntryWHERE  JournalEntryTime >= '2015-08-23 00:00:00.000'       AND JournalEntryTime <= '2015-08-23 23:59:59.999'       AND AccountSubject IN ('应收账款', '应付账款', '预收账款')       AND CustomerSiteType = '外部站点'