Revert "Delete assignment subst_id"

This reverts commit 6c5db9b.

Author: IlkaCu

dataprocessing/sql_snippets/rea/ego_dp_rea_setup.sql

@@ -36,6 +36,19 @@ ALTER TABLE model_draft.ego_dp_supply_res_powerplant
 -- scenario log (project,version,io,schema_name,table_name,script_name,comment)
 SELECT scenario_log('eGo_DP', 'v0.4.0','input','model_draft','ego_grid_mv_griddistrict','ego_dp_rea_setup.sql',' ');
 
+-- subst_id from mv-griddistrict
+UPDATE model_draft.ego_dp_supply_res_powerplant AS t1
+    SET subst_id = t2.subst_id
+    FROM (
+        SELECT  a.id AS id,
+                b.subst_id AS subst_id
+        FROM    model_draft.ego_dp_supply_res_powerplant AS a,
+                model_draft.ego_grid_mv_griddistrict AS b
+        WHERE   b.geom && ST_TRANSFORM(a.geom,3035) AND
+                ST_CONTAINS(b.geom,ST_TRANSFORM(a.geom,3035))
+        ) AS t2
+    WHERE   t1.id = t2.id;
+
 -- rea_flag reset
 UPDATE model_draft.ego_dp_supply_res_powerplant
     SET rea_flag = NULL,