select decode(dt.LATN_ID ,290,'西安','910','咸阳',911,'延安',912,'榆林',913,'渭南',914,'商洛',915,'安康', 916,'汉中',917,'宝鸡',919,'铜川') LATN_ID ,to_number(nvl(dt.dt,0))dt,to_number(nvl(wx.wx,0))wx,to_number(nvl(wap.wap,0))wap,to_number(nvl(day_sums.day_sums,0))day_s