Fix sql table migration mm

src/server/upgrade/index.md

@@ -20,7 +20,65 @@ Make sure to always back up your database data before doing a migration.
 
 Perform the migration:
 
+0. Fix table - migration from old to new MM version
+
+  ```bash
+      $ docker ps -a | grep postgres
+  ```
+              2b261cd55de2   postgres:14   "docker-entrypoint.s…"   4 weeks ago   Up About a minute  5432/tcp  merginmaps-db
+
+  ```bash
+      $ docker exec -it  2b261cd55de2 bash
+  ```
+  ```bash
+       psql -U postgres
+  ```
+
+  ```bash
+        select * from project;
+  ```
+  ```bash
+       BEGIN;
+
+       CREATE SEQUENCE IF NOT EXISTS public.map_overview_id_seq;
+
+       CREATE TABLE IF NOT EXISTS public.map_overview
+       (
+           id              INTEGER           NOT NULL DEFAULT nextval('map_overview_id_seq'::regclass),
+           project_id      UUID              NOT NULL,
+           version         CHARACTER VARYING,
+           config          JSON,
+           data_location   CHARACTER VARYING,
+           qgis_file       CHARACTER VARYING,
+
+           CONSTRAINT pk_map_overview
+               PRIMARY KEY (id, project_id),
+
+           CONSTRAINT fk_map_overview_project_id_project
+               FOREIGN KEY (project_id)
+               REFERENCES public.project (id)
+               ON DELETE CASCADE
+       );
+
+       CREATE INDEX IF NOT EXISTS ix_map_overview_project_id
+           ON public.map_overview (project_id ASC NULLS LAST);
+
+       CREATE INDEX IF NOT EXISTS ix_map_overview_version
+           ON public.map_overview (version ASC NULLS LAST);
+
+       COMMIT;
+   ```
+
+   ```bash
+          select * from map_overview;
+   ```
+         id | project_id | version | config | data_location | qgis_file
+        ----+------------+---------+--------+---------------+-----------
+        (0 rows)
+
+
 1. Stop your running docker containers
+
    ```bash
     $ docker compose -f docker-compose.yml down # or similarly, based on your previous deployment
    ```