--- /dev/null
+begin;
+
+-- make temporary table with all backup ids
+select backups.id into temporary all_backup_ids from files
+join shares on files.shareid = shares.id
+join backups on backups.hostid = shares.hostid and backups.num = files.backupnum
+where files.shareid = shares.id
+group by backups.id, files.shareid, files.backupnum
+;
+
+-- fix backups which are deleted and have size anyway
+update backups set inc_deleted = false where id not in (select id from all_backup_ids) and size > 0 ;
+
+-- fix parts numbering
+
+update backups set parts = 0 where parts > 0 and id not in (select backup_id from backup_parts) ;