/usr/lib/python2.7/dist-packages/txdav/common/datastore/sql_schema/upgrades/postgres-dialect/upgrade_from_6_to_7.sql is in calendarserver 5.2+dfsg-1.
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-- Copyright (c) 2011-2014 Apple Inc. All rights reserved.
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
----
-------------------------------------------------
-- Upgrade database schema from VERSION 6 to 7 --
-------------------------------------------------
-- Just need to add one column
alter table CALENDAR_HOME
add column DATAVERSION integer default 1 null;
-- Need to add timestamp columns
alter table CALENDAR_HOME_METADATA
add column CREATED timestamp default timezone('UTC', CURRENT_TIMESTAMP),
add column MODIFIED timestamp default timezone('UTC', CURRENT_TIMESTAMP);
-- Just need to add one column
alter table CALENDAR
add column SUPPORTED_COMPONENTS varchar(255) default null;
-- Just need to add one column
alter table ADDRESSBOOK_HOME
add column DATAVERSION integer default 1 null;
-- Need to add timestamp columns
alter table ADDRESSBOOK_HOME_METADATA
add column CREATED timestamp default timezone('UTC', CURRENT_TIMESTAMP),
add column MODIFIED timestamp default timezone('UTC', CURRENT_TIMESTAMP);
-- Add an index
create index CALENDAR_OBJECT_REVISIONS_RESOURCE_ID_REVISION
on CALENDAR_OBJECT_REVISIONS(CALENDAR_RESOURCE_ID, REVISION);
-- Add an index
create index ADDRESSBOOK_OBJECT_REVISIONS_RESOURCE_ID_REVISION
on ADDRESSBOOK_OBJECT_REVISIONS(ADDRESSBOOK_RESOURCE_ID, REVISION);
-- Add an index
create index NOTIFICATION_OBJECT_REVISIONS_RESOURCE_ID_REVISION
on NOTIFICATION_OBJECT_REVISIONS(NOTIFICATION_HOME_RESOURCE_ID, REVISION);
-- Change a constraint
alter table APN_SUBSCRIPTIONS
drop constraint APN_SUBSCRIPTIONS_TOKEN_RESOURCE_KEY_KEY,
add primary key(TOKEN, RESOURCE_KEY);
-- Now update the version
update CALENDARSERVER set VALUE = '7' where NAME = 'VERSION';
-- Also insert the initial data version which we will use in the data upgrade
insert into CALENDARSERVER values ('CALENDAR-DATAVERSION', '1');
insert into CALENDARSERVER values ('ADDRESSBOOK-DATAVERSION', '1');
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