core/src/main/resources/db/migration/V388__harmonize_table_attribute_name.sql

@@ -1224,58 +1224,32 @@ alter table `user_profile_project_type`
             on delete cascade on update cascade;
 
 
-/* the mess with ProjectType
+/* Useful SQL
 
 >>> SQL query for FK-to:
 
-   select table_name, column_name, referenced_table_name, referenced_column_name
-     from information_schema.key_column_usage
-    where table_schema = 'tozh4728' and
-          referenced_table_name = 'ProjectType';
+select table_name, column_name, referenced_table_name, referenced_column_name
+  from information_schema.key_column_usage
+ where table_schema = 'tozh4728' and referenced_table_name = 'ProjectType';
 
 >>> SQL query for FK-to count:
+
    select referenced_table_name, count(*) as c
      from information_schema.key_column_usage
-    where table_schema = 'tozh4728' and
-          referenced_table_name is not null
+    where table_schema = 'tozh4728' and referenced_table_name is not null
  group by referenced_table_name order by c desc;
 
 >>> SQL Query for FK-from
 
- select table_name, column_name, referenced_table_name, referenced_column_name
-   from information_schema.key_column_usage
-  where referenced_table_name is not null and table_name = 'user'
-   order by table_name;
+  select table_name, column_name, referenced_table_name, referenced_column_name
+    from information_schema.key_column_usage
+   where referenced_table_name is not null and table_name = 'user'
+order by table_name;
 
 >>> Show foreign keys
 
-   select table_name, column_name, constraint_name, referenced_table_name, referenced_column_name
-     from information_schema.key_column_usage
-    where table_schema = 'tozh4728' and table_name = 'ActivityTemplate';
+select table_name, column_name, constraint_name, referenced_table_name, referenced_column_name
+  from information_schema.key_column_usage
+where table_schema = 'tozh4728' and table_name = 'ActivityTemplate' and constraint_name != 'PRIMARY';
 
-   A. Drop FK from following tables
-
-   1. ExternalResource
-   2. project_type_settings
-   3. project_type_project_modules
-   4. projectPartner
-   5. target
-   6. checklist_template_ProjectType
-
-   7. grading_report_template
-   8. milestone_activity_template_ProjectType
-   9. ApplicationPeriodProjectType
-
-   10. user_profile_ProjectType
-
-   11. idea
-   12. project
-
-   B. Fix table ProjectType
-
-   C. Recreate FK for following tables without fixing the table.
-   1. idea
-   2. project
-
-   D. other tables can be fixed directly.
- */
+*/