import-database-users-and-databases (#82)

Co-authored-by: Michael Hoennig <michael@hoennig.de>
Reviewed-on: https://dev.hostsharing.net/hostsharing/hs.hsadmin.ng/pulls/82
Reviewed-by: Marc Sandlus <marc.sandlus@hostsharing.net>

src/main/resources/db/changelog/9-hs-global/9000-statistics.sql

@@ -0,0 +1,23 @@
+--liquibase formatted sql
+
+-- ============================================================================
+--changeset hs-global-object-statistics:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+CREATE VIEW hs_statistics_view AS
+select *
+    from (select count, "table" as "rbac-table", '' as "hs-table", '' as "type"
+              from rbacstatisticsview
+          union all
+          select to_char(count(*)::int, '9 999 999 999') as "count", 'objects' as "rbac-table", objecttable as "hs-table", '' as "type"
+              from rbacobject
+              group by objecttable
+          union all
+          select to_char(count(*)::int, '9 999 999 999'), 'objects', 'hs_hosting_asset', type::text
+              from hs_hosting_asset
+              group by type
+          union all
+          select to_char(count(*)::int, '9 999 999 999'), 'objects', 'hs_booking_item', type::text
+              from hs_booking_item
+              group by type
+         ) as totals order by replace(count, ' ', '')::int desc;
+--//

src/main/resources/db/changelog/db.changelog-master.yaml

@@ -151,3 +151,5 @@ databaseChangeLog:
         file: db/changelog/7-hs-hosting/701-hosting-asset/7013-hs-hosting-asset-rbac.sql
     - include:
         file: db/changelog/7-hs-hosting/701-hosting-asset/7018-hs-hosting-asset-test-data.sql
+    - include:
+        file: db/changelog/9-hs-global/9000-statistics.sql