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							- alter table wvp_device_channel
 
-     drop column custom_name;
 
- alter table wvp_device_channel
 
-     drop column channel_id;
 
- alter table wvp_device_channel
 
-     drop column custom_longitude;
 
- alter table wvp_device_channel
 
-     drop column custom_latitude;
 
- alter table wvp_device_channel
 
-     drop column custom_ptz_type;
 
- alter table wvp_device_channel
 
-     drop column longitude_gcj02;
 
- alter table wvp_device_channel
 
-     drop column latitude_gcj02;
 
- alter table wvp_device_channel
 
-     drop column longitude_wgs84;
 
- alter table wvp_device_channel
 
-     drop column latitude_wgs84;
 
- alter table wvp_device_channel
 
-     rename column manufacture to manufacturer;
 
- alter table wvp_device_channel
 
-     modify column parental integer;
 
- alter table wvp_device_channel
 
-     modify column secrecy integer;
 
- alter table wvp_device_channel
 
-     modify column status character varying(50);
 
- alter table wvp_device_channel
 
-     modify column device_id character varying(50);
 
- alter table wvp_device_channel
 
-     add position_type integer;
 
- alter table wvp_device_channel
 
-     add room_type integer;
 
- alter table wvp_device_channel
 
-     add use_type integer;
 
- alter table wvp_device_channel
 
-     add supply_light_type integer;
 
- alter table wvp_device_channel
 
-     add direction_type integer;
 
- alter table wvp_device_channel
 
-     add resolution character varying(255);
 
- alter table wvp_device_channel
 
-     modify column business_group_id character varying(255);
 
- alter table wvp_device_channel
 
-     add download_speed character varying(255);
 
- alter table wvp_device_channel
 
-     add svc_space_support_mod integer;
 
- alter table wvp_device_channel
 
-     add svc_time_support_mode integer;
 
- alter table wvp_device_channel
 
-     add device_db_id integer;
 
 
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