alter table stream_push add serverId varchar(50) not null; alter table device add geoCoordSys varchar(50) not null; update device set device.geoCoordSys='WGS84'; alter table device_channel add longitudeGcj02 double default null; alter table device_channel add latitudeGcj02 double default null; alter table device_channel add longitudeWgs84 double default null; alter table device_channel add latitudeWgs84 double default null;