比如我有DS1、DS2两个数据集,用关联数据集合并在一起,要如何写条件呢 DS1: select a,b,c FROM A where 1=1 ${if(len(sys) == 0,""," and 系统 in ('" + sys + "')")}AND A.申请日期 >= '${rq1}'AND A.申请日期 <= '${rq2}' DS2: select a,b,c FROM B where 1=1 ${if(len(sys) == 0,""," and 系统 in ('" + sys + "')")}AND A.申请日期 >= '${rq1}'AND A.申请日期 <= '${rq2}' |