blob: 8ddc8b32a271b43c5d9fadd9337492c67d6dbc54 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
create or replace function pgq.upgrade_schema()
returns int4 as $$
-- updates table structure if necessary
declare
cnt int4 = 0;
begin
-- pgq.subscription.sub_last_tick: NOT NULL -> NULL
perform 1 from information_schema.columns
where table_schema = 'pgq'
and table_name = 'subscription'
and column_name ='sub_last_tick'
and is_nullable = 'NO';
if found then
alter table pgq.subscription
alter column sub_last_tick
drop not null;
cnt := cnt + 1;
end if;
-- create roles
perform 1 from pg_catalog.pg_roles where rolname = 'pgq_reader';
if not found then
create role pgq_reader;
cnt := cnt + 1;
end if;
perform 1 from pg_catalog.pg_roles where rolname = 'pgq_writer';
if not found then
create role pgq_writer;
cnt := cnt + 1;
end if;
perform 1 from pg_catalog.pg_roles where rolname = 'pgq_admin';
if not found then
create role pgq_admin in role pgq_reader, pgq_writer;
cnt := cnt + 1;
end if;
return cnt;
end;
$$ language plpgsql;
|
