Mercurial > libervia-pubsub
view db/sat_pubsub_update_3_4.sql @ 422:c21f31355ab9
configuration: "max_items" option:
"max_items" is implemented using a text-single field, as it is done in the XEP-0060
example (there is no real formal description). When changing the node configuration, the
max_items can't be set to a number lower than the total number of items in the node (the
configuration will then be rejected), this is to avoid accidental deletion of items.
author | Goffi <goffi@goffi.org> |
---|---|
date | Tue, 10 Mar 2020 11:11:38 +0100 |
parents | 1dc606612405 |
children |
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-- we check version of the database before doing anything -- and stop execution if not good \set ON_ERROR_STOP DO $$ DECLARE ver text; BEGIN SELECT value INTO ver FROM metadata WHERE key='version'; IF NOT FOUND OR ver!='3' THEN RAISE EXCEPTION 'This update file needs to be applied on database schema version 3, you use version %',ver; END IF; END$$; \unset ON_ERROR_STOP -- end of version check /* new "serial ids" option */ ALTER TABLE nodes ADD COLUMN serial_ids boolean NOT NULL DEFAULT FALSE; /* we want to keep creation and update times */ ALTER TABLE items RENAME COLUMN date TO created; ALTER TABLE items ADD COLUMN updated timestamp with time zone NOT NULL DEFAULT now(); UPDATE metadata SET value='4' WHERE key='version';