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+Ce script permet de purger la base de données:
+
+```sql
+TRUNCATE TABLE listinstance;
+ALTER SEQUENCE listinstance_id_seq restart WITH 1;
+
+TRUNCATE TABLE listinstance_history;
+ALTER SEQUENCE listinstance_history_id_seq restart WITH 1;
+
+TRUNCATE TABLE listinstance_history_details;
+ALTER SEQUENCE listinstance_history_details_id_seq restart WITH 1;
+
+TRUNCATE TABLE history;
+ALTER SEQUENCE history_id_seq restart WITH 1;
+
+TRUNCATE TABLE history_batch;
+ALTER SEQUENCE history_batch_id_seq restart WITH 1;
+
+TRUNCATE TABLE notes;
+ALTER SEQUENCE notes_id_seq restart WITH 1;
+
+TRUNCATE TABLE note_entities;
+
+TRUNCATE TABLE res_letterbox;
+ALTER SEQUENCE res_id_mlb_seq restart WITH 1;
+
+TRUNCATE TABLE res_attachments;
+ALTER SEQUENCE res_attachment_res_id_seq restart WITH 1;
+
+TRUNCATE TABLE adr_letterbox;
+ALTER SEQUENCE adr_letterbox_id_seq restart WITH 1;
+
+TRUNCATE TABLE adr_attachments;
+ALTER SEQUENCE adr_attachments_id_seq restart WITH 1;
+
+TRUNCATE TABLE res_mark_as_read;
+
+TRUNCATE TABLE lc_stack;
+
+TRUNCATE TABLE tags;
+ALTER SEQUENCE tags_id_seq restart WITH 1;
+
+TRUNCATE TABLE resources_tags;
+
+TRUNCATE TABLE emails;
+
+TRUNCATE TABLE notif_event_stack;
+ALTER SEQUENCE notif_event_stack_seq restart WITH 1;
+
+TRUNCATE TABLE notif_email_stack;
+ALTER SEQUENCE notif_email_stack_seq restart WITH 1;
+
+TRUNCATE TABLE user_signatures;
+ALTER SEQUENCE user_signatures_id_seq restart WITH 1;
+
+TRUNCATE TABLE acknowledgement_receipts;
+ALTER SEQUENCE acknowledgement_receipts_id_seq restart WITH 1;
+
+TRUNCATE TABLE emails;
+ALTER SEQUENCE emails_id_seq restart WITH 1;
+
+TRUNCATE TABLE registered_mail_resources;
+ALTER SEQUENCE registered_mail_resources_id_seq restart WITH 1;
+
+TRUNCATE TABLE resource_contacts;
+ALTER SEQUENCE resource_contacts_id_seq restart WITH 1;
+
+TRUNCATE TABLE resources_folders;
+ALTER SEQUENCE resources_folders_id_seq restart WITH 1;
+
+TRUNCATE TABLE unit_identifier;
+
+TRUNCATE TABLE users_followed_resources;
+ALTER SEQUENCE users_followed_resources_id_seq restart WITH 1;
+
+TRUNCATE TABLE message_exchange;
+
+TRUNCATE TABLE shippings;
+ALTER SEQUENCE shippings_id_seq restart WITH 1;
+
+
+/* reset chrono */
+UPDATE parameters SET param_value_int = '1' WHERE id = 'chrono_outgoing_' || extract(YEAR FROM current_date);
+UPDATE parameters SET param_value_int = '1' WHERE id = 'chrono_incoming_' || extract(YEAR FROM current_date);
+UPDATE parameters SET param_value_int = '1' WHERE id = 'chrono_internal_' || extract(YEAR FROM current_date);
+```
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