设备bug修改 新增设备解绑功能

script/sql/update/remove_device_unbind_command_id.sql

@@ -0,0 +1,35 @@
+-- Device-initiated unbinding is identified by device_no + binding_id.
+-- Keep the most useful result if the old commandId protocol created duplicate rows.
+DELETE d
+FROM app_device_unbind_command d
+JOIN app_device_unbind_command r
+  ON r.device_no = d.device_no
+ AND r.binding_id = d.binding_id
+ AND (
+      CASE r.command_status
+          WHEN 'APPLIED' THEN 4
+          WHEN 'PROCESSING' THEN 3
+          WHEN 'FAILED' THEN 2
+          WHEN 'STALE' THEN 1
+          ELSE 0
+      END > CASE d.command_status
+          WHEN 'APPLIED' THEN 4
+          WHEN 'PROCESSING' THEN 3
+          WHEN 'FAILED' THEN 2
+          WHEN 'STALE' THEN 1
+          ELSE 0
+      END
+      OR (
+          r.command_status = d.command_status
+          AND r.id < d.id
+      )
+ );
+
+ALTER TABLE app_device_binding
+    DROP COLUMN unbind_command_id;
+
+ALTER TABLE app_device_unbind_command
+    DROP INDEX uk_app_device_unbind_command,
+    DROP INDEX idx_app_device_unbind_binding,
+    DROP COLUMN command_id,
+    ADD UNIQUE KEY uk_app_device_unbind_binding (device_no, binding_id);