remove entries from w_id first

IlkaCu · web-flow · commit 8a1898c06ce1 · 2018-03-22T15:25:50.000+01:00
diff --git a/dataprocessing/sql_snippets/ego_dp_powerflow_assignment_otgid.sql b/dataprocessing/sql_snippets/ego_dp_powerflow_assignment_otgid.sql
@@ -54,6 +54,9 @@ END);
 
 -- add weather cell id (w_id) 
 
+UPDATE model_draft.ego_dp_supply_res_powerplant
+	SET w_id = NULL; 
+
 UPDATE model_draft.ego_dp_supply_res_powerplant a
 	SET w_id = b.gid
 		FROM 	climate.cosmoclmgrid b 
