mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-15 18:13:18 +08:00
009d970af9
In order to keep the number of supported PG versions more managable remove support for PG13.
42 lines
1.4 KiB
PL/PgSQL
42 lines
1.4 KiB
PL/PgSQL
-- This file and its contents are licensed under the Apache License 2.0.
|
|
-- Please see the included NOTICE for copyright information and
|
|
-- LICENSE-APACHE for a copy of the license.
|
|
|
|
CREATE TABLE cursor_test(time timestamptz, device_id int, temp float);
|
|
SELECT create_hypertable('cursor_test','time');
|
|
|
|
INSERT INTO cursor_test SELECT '2000-01-01',1,0.5;
|
|
INSERT INTO cursor_test SELECT '2001-01-01',1,0.5;
|
|
INSERT INTO cursor_test SELECT '2002-01-01',1,0.5;
|
|
|
|
\set ON_ERROR_STOP 0
|
|
BEGIN;
|
|
DECLARE c1 SCROLL CURSOR FOR SELECT * FROM cursor_test;
|
|
FETCH NEXT FROM c1;
|
|
-- this will produce an error on PG < 14 because PostgreSQL checks
|
|
-- for the existence of a scan node with the relation id for every relation
|
|
-- used in the update plan in the plan of the cursor.
|
|
UPDATE cursor_test SET temp = 0.7 WHERE CURRENT OF c1;
|
|
COMMIT;
|
|
|
|
-- test cursor with no chunks left after runtime exclusion
|
|
BEGIN;
|
|
DECLARE c1 SCROLL CURSOR FOR SELECT * FROM cursor_test WHERE time > now();
|
|
UPDATE cursor_test SET temp = 0.7 WHERE CURRENT OF c1;
|
|
COMMIT;
|
|
|
|
-- test cursor with no chunks left after planning exclusion
|
|
BEGIN;
|
|
DECLARE c1 SCROLL CURSOR FOR SELECT * FROM cursor_test WHERE time > '2010-01-01';
|
|
UPDATE cursor_test SET temp = 0.7 WHERE CURRENT OF c1;
|
|
COMMIT;
|
|
\set ON_ERROR_STOP 1
|
|
|
|
SET timescaledb.enable_constraint_exclusion TO off;
|
|
BEGIN;
|
|
DECLARE c1 SCROLL CURSOR FOR SELECT * FROM cursor_test;
|
|
FETCH NEXT FROM c1;
|
|
UPDATE cursor_test SET temp = 0.7 WHERE CURRENT OF c1;
|
|
COMMIT;
|
|
|