DB2数据库 CASE WHEN的使用

select CASE WHEN T1.COMMERCIALENDDATE IS NULL THEN T1.INSURANCEMATURITYDATE WHEN YEAR(T1.COMMERCIALENDDATE) = 2014  
    THEN T1.COMMERCIALENDDATE WHEN YEAR(T1.INSURANCEMATURITYDATE) = 2014 THEN T1.INSURANCEMATURITYDATE ELSE T1.COMMERCIALENDDATE END as m, T1.INSURANCEMATURITYDATE
    ,T1.COMMERCIALENDDATE FROM RT_INSURANCEBUY T1
【推广】 免费学中医，健康全家人
原文地址：https://www.cnblogs.com/ShaYeBlog/p/4155940.html