通用推送数据功能优化@2020/11/19 by pengdi

smart-city-platform/src/main/resources/mapper/DeviceMapper.xml

@@ -998,7 +998,7 @@
         DATE_FORMAT( d.date_create, '%Y-%m-%d' ) AS dateCreate,
         ifnull(m.factory,f.`name`) as factory,
         m.user_name AS userName,
-        ifnull(ll.new_meter_start,'0') AS beginWSV,
+        if(LENGTH(trim(ifnull(ll.new_meter_start,'0')))>0 ,ifnull(ll.new_meter_start,'0'),'0') AS beginWSV,
         ifnull(m.area_name,c.`name`) AS areaName,
         d.loc_desc AS location,
         d.water_meter_no AS meterNumber,