Merge pull request #83 from developmentseed/feature/81-upload-md

Upload markdown file

Author: olafveerman

docs/data-upload.md

@@ -0,0 +1,25 @@
+### Resetting counters after bulk upload
+
+After a bulk upload with Osmosis, sequence counters must be reset so that the database auto-increments the primary key id of the model.
+
+Here is how to reset the counters to the maximum value of the model primary key:
+
+```plpgsql
+select setval('acls_id_seq', (select max(id) from acls));
+select setval('changesets_id_seq', (select max(id) from changesets));
+select setval('countries_id_seq', (select max(id) from countries));
+select setval('current_nodes_id_seq', (select max(id) from current_nodes));
+select setval('current_relations_id_seq', (select max(id) from
+current_relations));
+select setval('current_ways_id_seq', (select max(id) from current_ways));
+select setval('diary_comments_id_seq', (select max(id) from
+diary_comments));
+select setval('diary_entries_id_seq', (select max(id) from diary_entries));
+select setval('friends_id_seq', (select max(id) from friends));
+select setval('gpx_file_tags_id_seq', (select max(id) from gpx_file_tags));
+select setval('gpx_files_id_seq', (select max(id) from gpx_file_ids));
+select setval('messages_id_seq', (select max(id) from messages));
+select setval('sessions_id_seq', (select max(id) from sessions));
+select setval('user_tokens_id_seq', (select max(id) from user_tokens));
+select setval('users_id_seq', (select max(id) from users));
+```