Clarify migration steps for overviews table issue

src/server/upgrade/PATCHCreate_ map_overview.sql

@@ -0,0 +1,33 @@
+-- ============================================================
+-- PATCH: Create map_overview table
+-- ============================================================
+
+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;

src/server/upgrade/index.md

@@ -20,23 +20,23 @@ 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
+0. Fix the issue of missing overviews table in case it was not created during older db migration.
 
  ```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
+ $ docker exec -it merginmaps-db bash
  ```
+ Run commands in postgres container:
+
  ```bash
  psql -U postgres
  ```
 
- ```bash
- select * from project;
- ```
  ```bash
  BEGIN;