-- This file and its contents are licensed under the Timescale License.
-- Please see the included NOTICE for copyright information and
-- LICENSE-TIMESCALE for a copy of the license.
-- test single column fk constraint from plain table to hypertable during hypertable creation
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 0:00:00', 'd1', 1.0);
INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 1:00:00', 'd1', 1.0);
CREATE TABLE event(time timestamptz references metrics(time), info text);
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2020-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2020-01-01', 'info2');
\set ON_ERROR_STOP 0
-- should fail
UPDATE event SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
BEGIN;
UPDATE event SET time = '2020-01-01 01:00:00' WHERE time = '2020-01-01';
ROLLBACK;
\set ON_ERROR_STOP 0
-- should fail
DELETE FROM metrics WHERE time = '2020-01-01';
ERROR:  update or delete on table "_hyper_1_1_chunk" violates foreign key constraint "event_time_fkey1" on table "event"
-- should fail
UPDATE metrics SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
ERROR:  update or delete on table "_hyper_1_1_chunk" violates foreign key constraint "event_time_fkey1" on table "event"
\set ON_ERROR_STOP 1
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |               confrelid                | parent 
------------------+----------+----------------------------------------+--------
 event_time_fkey  | event    | metrics                                | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_1_1_chunk | t
(2 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
         tgfoid         | parent | tgisinternal | tgconstrrelid 
------------------------+--------+--------------+---------------
 "RI_FKey_noaction_del" | f      | t            | event
 "RI_FKey_noaction_upd" | f      | t            | event
 "RI_FKey_noaction_del" | t      | t            | event
 "RI_FKey_noaction_upd" | t      | t            | event
(4 rows)

-- create new chunk and repeat the test
INSERT INTO metrics(time, device, value) VALUES ('2021-01-01', 'd1', 1.0);
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2021-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2021-01-01', 'info2');
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |               confrelid                | parent 
------------------+----------+----------------------------------------+--------
 event_time_fkey  | event    | metrics                                | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_1_1_chunk | t
 event_time_fkey2 | event    | _timescaledb_internal._hyper_1_2_chunk | t
(3 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
         tgfoid         | parent | tgisinternal | tgconstrrelid 
------------------------+--------+--------------+---------------
 "RI_FKey_noaction_del" | f      | t            | event
 "RI_FKey_noaction_upd" | f      | t            | event
 "RI_FKey_noaction_del" | t      | t            | event
 "RI_FKey_noaction_upd" | t      | t            | event
 "RI_FKey_noaction_del" | t      | t            | event
 "RI_FKey_noaction_upd" | t      | t            | event
(6 rows)

-- chunks referenced in fk constraints must not be dropped or truncated
\set ON_ERROR_STOP 0
TRUNCATE metrics;
ERROR:  cannot truncate a table referenced in a foreign key constraint
TRUNCATE _timescaledb_internal._hyper_1_1_chunk;
ERROR:  cannot truncate a table referenced in a foreign key constraint
TRUNCATE _timescaledb_internal._hyper_1_2_chunk;
ERROR:  cannot truncate a table referenced in a foreign key constraint
DROP TABLE _timescaledb_internal._hyper_1_1_chunk;
ERROR:  cannot drop table _timescaledb_internal._hyper_1_1_chunk because other objects depend on it
DROP TABLE _timescaledb_internal._hyper_1_2_chunk;
ERROR:  cannot drop table _timescaledb_internal._hyper_1_2_chunk because other objects depend on it
SELECT drop_chunks('metrics', '1 month'::interval);
ERROR:  cannot drop constraint 1_1_metrics_pkey on table _timescaledb_internal._hyper_1_1_chunk because other objects depend on it
\set ON_ERROR_STOP 1
-- after removing constraint dropping should succeed
ALTER TABLE event DROP CONSTRAINT event_time_fkey;
SELECT drop_chunks('metrics', '1 month'::interval);
              drop_chunks               
----------------------------------------
 _timescaledb_internal._hyper_1_1_chunk
 _timescaledb_internal._hyper_1_2_chunk
(2 rows)

DROP TABLE event;
DROP TABLE metrics;
-- test single column fk constraint from plain table to hypertable during hypertable creation with RESTRICT
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 0:00:00', 'd1', 1.0);
INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 1:00:00', 'd1', 1.0);
CREATE TABLE event(time timestamptz references metrics(time) ON DELETE RESTRICT ON UPDATE RESTRICT, info text);
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2020-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2020-01-01', 'info2');
\set ON_ERROR_STOP 0
-- should fail
UPDATE event SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
BEGIN;
UPDATE event SET time = '2020-01-01 01:00:00' WHERE time = '2020-01-01';
ROLLBACK;
\set ON_ERROR_STOP 0
-- should fail
DELETE FROM metrics WHERE time = '2020-01-01';
ERROR:  update or delete on table "_hyper_2_3_chunk" violates foreign key constraint "event_time_fkey1" on table "event"
-- should fail
UPDATE metrics SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
ERROR:  update or delete on table "_hyper_2_3_chunk" violates foreign key constraint "event_time_fkey1" on table "event"
\set ON_ERROR_STOP 1
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |               confrelid                | parent 
------------------+----------+----------------------------------------+--------
 event_time_fkey  | event    | metrics                                | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_2_3_chunk | t
(2 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
         tgfoid         | parent | tgisinternal | tgconstrrelid 
------------------------+--------+--------------+---------------
 "RI_FKey_restrict_del" | f      | t            | event
 "RI_FKey_restrict_upd" | f      | t            | event
 "RI_FKey_restrict_del" | t      | t            | event
 "RI_FKey_restrict_upd" | t      | t            | event
(4 rows)

-- create new chunk and repeat the test
INSERT INTO metrics(time, device, value) VALUES ('2021-01-01', 'd1', 1.0);
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2021-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2021-01-01', 'info2');
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |               confrelid                | parent 
------------------+----------+----------------------------------------+--------
 event_time_fkey  | event    | metrics                                | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_2_3_chunk | t
 event_time_fkey2 | event    | _timescaledb_internal._hyper_2_4_chunk | t
(3 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
         tgfoid         | parent | tgisinternal | tgconstrrelid 
------------------------+--------+--------------+---------------
 "RI_FKey_restrict_del" | f      | t            | event
 "RI_FKey_restrict_upd" | f      | t            | event
 "RI_FKey_restrict_del" | t      | t            | event
 "RI_FKey_restrict_upd" | t      | t            | event
 "RI_FKey_restrict_del" | t      | t            | event
 "RI_FKey_restrict_upd" | t      | t            | event
(6 rows)

DROP TABLE event;
DROP TABLE metrics;
-- test single column fk constraint from plain table to hypertable during hypertable creation with CASCADE
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 0:00:00', 'd1', 1.0);
INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 1:00:00', 'd1', 1.0);
CREATE TABLE event(time timestamptz references metrics(time) ON DELETE CASCADE ON UPDATE CASCADE, info text);
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2020-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2020-01-01', 'info2');
\set ON_ERROR_STOP 0
-- should fail
UPDATE event SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
BEGIN;
UPDATE event SET time = '2020-01-01 01:00:00' WHERE time = '2020-01-01';
ROLLBACK;
-- should cascade
BEGIN;
DELETE FROM metrics WHERE time = '2020-01-01';
SELECT * FROM event ORDER BY event;
 time | info 
------+------
(0 rows)

ROLLBACK;
-- should cascade
BEGIN;
UPDATE metrics SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
SELECT * FROM event ORDER BY event;
             time             | info  
------------------------------+-------
 Wed Jan 01 00:30:00 2020 PST | info2
(1 row)

ROLLBACK;
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |               confrelid                | parent 
------------------+----------+----------------------------------------+--------
 event_time_fkey  | event    | metrics                                | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_3_5_chunk | t
(2 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
        tgfoid         | parent | tgisinternal | tgconstrrelid 
-----------------------+--------+--------------+---------------
 "RI_FKey_cascade_del" | f      | t            | event
 "RI_FKey_cascade_upd" | f      | t            | event
 "RI_FKey_cascade_del" | t      | t            | event
 "RI_FKey_cascade_upd" | t      | t            | event
(4 rows)

DROP TABLE event;
DROP TABLE metrics;
-- test single column fk constraint from plain table to hypertable during hypertable creation with SET NULL
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 0:00:00', 'd1', 1.0);
INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 1:00:00', 'd1', 1.0);
CREATE TABLE event(time timestamptz references metrics(time) ON DELETE SET NULL ON UPDATE SET NULL, info text);
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2020-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2020-01-01', 'info2');
\set ON_ERROR_STOP 0
-- should fail
UPDATE event SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
BEGIN;
UPDATE event SET time = '2020-01-01 01:00:00' WHERE time = '2020-01-01';
ROLLBACK;
-- should cascade
BEGIN;
DELETE FROM metrics WHERE time = '2020-01-01';
SELECT * FROM event ORDER BY event;
 time | info  
------+-------
      | info2
(1 row)

ROLLBACK;
-- should cascade
BEGIN;
UPDATE metrics SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
SELECT * FROM event ORDER BY event;
 time | info  
------+-------
      | info2
(1 row)

ROLLBACK;
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |               confrelid                | parent 
------------------+----------+----------------------------------------+--------
 event_time_fkey  | event    | metrics                                | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_4_6_chunk | t
(2 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
        tgfoid         | parent | tgisinternal | tgconstrrelid 
-----------------------+--------+--------------+---------------
 "RI_FKey_setnull_del" | f      | t            | event
 "RI_FKey_setnull_upd" | f      | t            | event
 "RI_FKey_setnull_del" | t      | t            | event
 "RI_FKey_setnull_upd" | t      | t            | event
(4 rows)

DROP TABLE event;
DROP TABLE metrics;
-- test single column fk constraint from plain table to hypertable during hypertable creation with SET DEFAULT
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 0:00:00', 'd1', 1.0);
INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 1:00:00', 'd1', 1.0);
CREATE TABLE event(time timestamptz default null references metrics(time) ON DELETE SET DEFAULT ON UPDATE SET DEFAULT, info text);
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2020-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2020-01-01', 'info2');
\set ON_ERROR_STOP 0
-- should fail
UPDATE event SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
BEGIN;
UPDATE event SET time = '2020-01-01 01:00:00' WHERE time = '2020-01-01';
ROLLBACK;
-- should cascade
BEGIN;
DELETE FROM metrics WHERE time = '2020-01-01';
SELECT * FROM event ORDER BY event;
 time | info  
------+-------
      | info2
(1 row)

ROLLBACK;
-- should cascade
BEGIN;
UPDATE metrics SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
SELECT * FROM event ORDER BY event;
 time | info  
------+-------
      | info2
(1 row)

ROLLBACK;
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |               confrelid                | parent 
------------------+----------+----------------------------------------+--------
 event_time_fkey  | event    | metrics                                | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_5_7_chunk | t
(2 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
          tgfoid          | parent | tgisinternal | tgconstrrelid 
--------------------------+--------+--------------+---------------
 "RI_FKey_setdefault_del" | f      | t            | event
 "RI_FKey_setdefault_upd" | f      | t            | event
 "RI_FKey_setdefault_del" | t      | t            | event
 "RI_FKey_setdefault_upd" | t      | t            | event
(4 rows)

DROP TABLE event;
DROP TABLE metrics;
-- test single column fk constraint from plain table to hypertable with constraint being added separately
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01', 'd1', 1.0);
CREATE TABLE event(time timestamptz, info text);
ALTER TABLE event ADD CONSTRAINT event_time_fkey FOREIGN KEY (time) REFERENCES metrics(time) ON DELETE RESTRICT;
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2020-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2020-01-01', 'info2');
-- should fail
\set ON_ERROR_STOP 0
DELETE FROM metrics WHERE time = '2020-01-01';
ERROR:  update or delete on table "_hyper_6_8_chunk" violates foreign key constraint "event_time_fkey1" on table "event"
\set ON_ERROR_STOP 1
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |               confrelid                | parent 
------------------+----------+----------------------------------------+--------
 event_time_fkey  | event    | metrics                                | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_6_8_chunk | t
(2 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
         tgfoid         | parent | tgisinternal | tgconstrrelid 
------------------------+--------+--------------+---------------
 "RI_FKey_restrict_del" | f      | t            | event
 "RI_FKey_noaction_upd" | f      | t            | event
 "RI_FKey_restrict_del" | t      | t            | event
 "RI_FKey_noaction_upd" | t      | t            | event
(4 rows)

DROP TABLE event;
DROP TABLE metrics;
-- test multi column fk constraint from plain table to hypertable
CREATE TABLE metrics(time timestamptz , device text, value float, primary key (time, device));
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01', 'd1', 1.0);
CREATE TABLE event(time timestamptz, device text, info text);
ALTER TABLE event ADD CONSTRAINT event_time_fkey FOREIGN KEY (time,device) REFERENCES metrics(time,device) ON DELETE RESTRICT;
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, device, info) VALUES ('2020-01-02', 'd1', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
INSERT INTO event(time, device, info) VALUES ('2020-01-01', 'd2', 'info2');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, device, info) VALUES ('2020-01-01', 'd1', 'info2');
-- should fail
\set ON_ERROR_STOP 0
DELETE FROM metrics WHERE time = '2020-01-01';
ERROR:  update or delete on table "_hyper_7_9_chunk" violates foreign key constraint "event_time_device_fkey" on table "event"
DELETE FROM metrics WHERE device = 'd1';
ERROR:  update or delete on table "_hyper_7_9_chunk" violates foreign key constraint "event_time_device_fkey" on table "event"
\set ON_ERROR_STOP 1
DROP TABLE event;
DROP TABLE metrics;
-- test single column fk constraint from plain table to hypertable with constraint being added separately while data is present
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01', 'd1', 1.0);
CREATE TABLE event(time timestamptz, info text);
INSERT INTO event(time, info) VALUES ('2020-01-01', 'info2');
INSERT INTO event(time, info) VALUES ('2020-02-01', 'info1');
-- should fail
\set ON_ERROR_STOP 0
ALTER TABLE event ADD CONSTRAINT event_time_fkey FOREIGN KEY (time) REFERENCES metrics(time) ON DELETE SET NULL;
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
INSERT INTO metrics(time, device, value) VALUES ('2020-02-01', 'd1', 1.0);
ALTER TABLE event ADD CONSTRAINT event_time_fkey FOREIGN KEY (time) REFERENCES metrics(time) ON DELETE CASCADE;
-- delete should cascade
DELETE FROM metrics WHERE time = '2020-01-01';
SELECT * FROM event;
             time             | info  
------------------------------+-------
 Sat Feb 01 00:00:00 2020 PST | info1
(1 row)

DROP TABLE event;
DROP TABLE metrics;
-- test single column fk constraint from plain table to compressed hypertable
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 0:00:00', 'd1', 1.0);
INSERT INTO metrics(time, device, value) VALUES ('2020-01-01 1:00:00', 'd1', 1.0);
ALTER TABLE metrics SET(timescaledb.compress, timescaledb.compress_segmentby='device');
NOTICE:  default order by for hypertable "metrics" is set to ""time" DESC"
SELECT count(compress_chunk(ch)) FROM show_chunks('metrics') ch;
 count 
-------
     1
(1 row)

CREATE TABLE event(time timestamptz references metrics(time) ON DELETE CASCADE ON UPDATE CASCADE, info text);
-- should fail
\set ON_ERROR_STOP 0
INSERT INTO event(time, info) VALUES ('2020-01-02', 'info1');
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
INSERT INTO event(time, info) VALUES ('2020-01-01', 'info2');
\set ON_ERROR_STOP 0
-- should fail
UPDATE event SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
ERROR:  insert or update on table "event" violates foreign key constraint "event_time_fkey"
\set ON_ERROR_STOP 1
-- should succeed
BEGIN;
UPDATE event SET time = '2020-01-01 01:00:00' WHERE time = '2020-01-01';
ROLLBACK;
-- should cascade
BEGIN;
DELETE FROM metrics WHERE time = '2020-01-01';
SELECT * FROM event ORDER BY event;
 time | info 
------+------
(0 rows)

ROLLBACK;
-- should cascade
BEGIN;
UPDATE metrics SET time = '2020-01-01 00:30:00' WHERE time = '2020-01-01';
SELECT * FROM event ORDER BY event;
             time             | info  
------------------------------+-------
 Wed Jan 01 00:30:00 2020 PST | info2
(1 row)

ROLLBACK;
SELECT conname, conrelid::regclass, confrelid::regclass, conparentid <> 0 AS parent FROM pg_constraint WHERE conrelid='event'::regclass ORDER BY oid;
     conname      | conrelid |                confrelid                | parent 
------------------+----------+-----------------------------------------+--------
 event_time_fkey  | event    | metrics                                 | f
 event_time_fkey1 | event    | _timescaledb_internal._hyper_9_12_chunk | t
(2 rows)

SELECT tgfoid::regproc, tgparentid <> 0 AS parent, tgisinternal, tgconstrrelid::regclass FROM pg_trigger WHERE tgconstrrelid='event'::regclass ORDER BY oid;
        tgfoid         | parent | tgisinternal | tgconstrrelid 
-----------------------+--------+--------------+---------------
 "RI_FKey_cascade_del" | f      | t            | event
 "RI_FKey_cascade_upd" | f      | t            | event
 "RI_FKey_cascade_del" | t      | t            | event
 "RI_FKey_cascade_upd" | t      | t            | event
(4 rows)

DROP TABLE event;
DROP TABLE metrics;
-- test single column fk constraint from hypertable to hypertable
CREATE TABLE metrics(time timestamptz primary key, device text, value float);
SELECT table_name FROM create_hypertable('metrics', 'time');
 table_name 
------------
 metrics
(1 row)

CREATE TABLE event(time timestamptz, info text);
SELECT table_name FROM create_hypertable('event', 'time');
NOTICE:  adding not-null constraint to column "time"
 table_name 
------------
 event
(1 row)

\set ON_ERROR_STOP 0
ALTER TABLE event ADD CONSTRAINT event_time_fkey FOREIGN KEY (time) REFERENCES metrics(time);
ERROR:  hypertables cannot be used as foreign key references of hypertables
\set ON_ERROR_STOP 1
CREATE TABLE event2(time timestamptz REFERENCES metrics(time), info text);
\set ON_ERROR_STOP 0
SELECT table_name FROM create_hypertable('event2', 'time');
ERROR:  hypertables cannot be used as foreign key references of hypertables
\set ON_ERROR_STOP 1
DROP TABLE event;
DROP TABLE event2;
DROP TABLE metrics;
-- test FK behavior with different cascading configurations
CREATE TABLE fk_no_action(fk_no_action text primary key);
CREATE TABLE fk_restrict(fk_restrict text primary key);
CREATE TABLE fk_cascade(fk_cascade text primary key);
CREATE TABLE fk_set_null(fk_set_null text primary key);
CREATE TABLE fk_set_default(fk_set_default text primary key);
CREATE TABLE ht(
  time timestamptz not null,
  fk_no_action text references fk_no_action(fk_no_action) ON DELETE NO ACTION ON UPDATE NO ACTION,
  fk_restrict text references fk_restrict(fk_restrict) ON DELETE RESTRICT ON UPDATE RESTRICT,
  fk_cascade text references fk_cascade(fk_cascade) ON DELETE CASCADE ON UPDATE CASCADE,
  fk_set_null text references fk_set_null(fk_set_null) ON DELETE SET NULL ON UPDATE SET NULL,
  fk_set_default text default 'default' references fk_set_default(fk_set_default) ON DELETE SET DEFAULT ON UPDATE SET DEFAULT
);
SELECT table_name FROM create_hypertable('ht', 'time');
 table_name 
------------
 ht
(1 row)

ALTER TABLE ht SET(timescaledb.compress, timescaledb.compress_segmentby='fk_no_action,fk_restrict,fk_cascade,fk_set_null,fk_set_default');
NOTICE:  default order by for hypertable "ht" is set to ""time" DESC"
\set ON_ERROR_STOP 0
INSERT INTO fk_set_default(fk_set_default) VALUES ('default');
INSERT INTO ht(time) VALUES ('2020-01-01');
-- NO ACTION
-- should fail with foreign key violation
INSERT INTO ht(time, fk_no_action) VALUES ('2020-01-01', 'fk_no_action');
ERROR:  insert or update on table "_hyper_13_14_chunk" violates foreign key constraint "14_14_ht_fk_no_action_fkey"
-- ON UPDATE NO ACTION
BEGIN;
INSERT INTO fk_no_action(fk_no_action) VALUES ('fk_no_action');
INSERT INTO ht(time, fk_no_action) VALUES ('2020-01-01', 'fk_no_action');
-- should error
UPDATE fk_no_action SET fk_no_action = 'fk_no_action_updated';
ERROR:  update or delete on table "fk_no_action" violates foreign key constraint "ht_fk_no_action_fkey" on table "ht"
ROLLBACK;
-- ON UPDATE NO ACTION with compression
BEGIN;
INSERT INTO fk_no_action(fk_no_action) VALUES ('fk_no_action');
INSERT INTO ht(time, fk_no_action) VALUES ('2020-01-01', 'fk_no_action');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should error
UPDATE fk_no_action SET fk_no_action = 'fk_no_action_updated';
ERROR:  update or delete on table "fk_no_action" violates foreign key constraint "ht_fk_no_action_fkey" on table "ht"
ROLLBACK;
-- ON DELETE NO ACTION
BEGIN;
INSERT INTO fk_no_action(fk_no_action) VALUES ('fk_no_action');
INSERT INTO ht(time, fk_no_action) VALUES ('2020-01-01', 'fk_no_action');
-- should error
DELETE FROM fk_no_action;
ERROR:  update or delete on table "fk_no_action" violates foreign key constraint "ht_fk_no_action_fkey" on table "ht"
ROLLBACK;
-- ON DELETE NO ACTION with compression
BEGIN;
INSERT INTO fk_no_action(fk_no_action) VALUES ('fk_no_action');
INSERT INTO ht(time, fk_no_action) VALUES ('2020-01-01', 'fk_no_action');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should error
DELETE FROM fk_no_action;
ERROR:  update or delete on table "fk_no_action" violates foreign key constraint "ht_fk_no_action_fkey" on table "ht"
ROLLBACK;
-- RESTRICT
-- should fail with foreign key violation
INSERT INTO ht(time, fk_restrict) VALUES ('2020-01-01', 'fk_restrict');
ERROR:  insert or update on table "_hyper_13_14_chunk" violates foreign key constraint "14_15_ht_fk_restrict_fkey"
-- ON UPDATE RESTRICT
BEGIN;
INSERT INTO fk_restrict(fk_restrict) VALUES ('fk_restrict');
INSERT INTO ht(time, fk_restrict) VALUES ('2020-01-01', 'fk_restrict');
-- should error
UPDATE fk_restrict SET fk_restrict = 'fk_restrict_updated';
ERROR:  update or delete on table "fk_restrict" violates foreign key constraint "ht_fk_restrict_fkey" on table "ht"
ROLLBACK;
-- ON UPDATE RESTRICT with compression
BEGIN;
INSERT INTO fk_restrict(fk_restrict) VALUES ('fk_restrict');
INSERT INTO ht(time, fk_restrict) VALUES ('2020-01-01', 'fk_restrict');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should error
UPDATE fk_restrict SET fk_restrict = 'fk_restrict_updated';
ERROR:  update or delete on table "fk_restrict" violates foreign key constraint "ht_fk_restrict_fkey" on table "ht"
ROLLBACK;
-- ON DELETE RESTRICT
BEGIN;
INSERT INTO fk_restrict(fk_restrict) VALUES ('fk_restrict');
INSERT INTO ht(time, fk_restrict) VALUES ('2020-01-01', 'fk_restrict');
-- should error
DELETE FROM fk_restrict;
ERROR:  update or delete on table "fk_restrict" violates foreign key constraint "ht_fk_restrict_fkey" on table "ht"
ROLLBACK;
-- ON DELETE RESTRICT with compression
BEGIN;
INSERT INTO fk_restrict(fk_restrict) VALUES ('fk_restrict');
INSERT INTO ht(time, fk_restrict) VALUES ('2020-01-01', 'fk_restrict');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should error
DELETE FROM fk_restrict;
ERROR:  update or delete on table "fk_restrict" violates foreign key constraint "ht_fk_restrict_fkey" on table "ht"
ROLLBACK;
-- CASCADE
-- should fail with foreign key violation
INSERT INTO ht(time, fk_cascade) VALUES ('2020-01-01', 'fk_cascade');
ERROR:  insert or update on table "_hyper_13_14_chunk" violates foreign key constraint "14_13_ht_fk_cascade_fkey"
-- ON UPDATE CASCADE
BEGIN;
INSERT INTO fk_cascade(fk_cascade) VALUES ('fk_cascade');
INSERT INTO ht(time, fk_cascade) VALUES ('2020-01-01', 'fk_cascade');
-- should cascade
UPDATE fk_cascade SET fk_cascade = 'fk_cascade_updated';
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict |     fk_cascade     | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+--------------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |                    |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             | fk_cascade_updated |             | default
(2 rows)

ROLLBACK;
-- ON UPDATE CASCADE with compression
BEGIN;
INSERT INTO fk_cascade(fk_cascade) VALUES ('fk_cascade');
INSERT INTO ht(time, fk_cascade) VALUES ('2020-01-01', 'fk_cascade');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should cascade
UPDATE fk_cascade SET fk_cascade = 'fk_cascade_updated';
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict |     fk_cascade     | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+--------------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |                    |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             | fk_cascade_updated |             | default
(2 rows)

EXPLAIN (analyze, costs off, timing off, summary off) SELECT * FROM ht;
                                    QUERY PLAN                                     
-----------------------------------------------------------------------------------
 Append (actual rows=2 loops=1)
   ->  Custom Scan (DecompressChunk) on _hyper_13_14_chunk (actual rows=1 loops=1)
         ->  Seq Scan on compress_hyper_14_19_chunk (actual rows=1 loops=1)
   ->  Seq Scan on _hyper_13_14_chunk (actual rows=1 loops=1)
(4 rows)

ROLLBACK;
-- ON DELETE CASCADE
BEGIN;
INSERT INTO fk_cascade(fk_cascade) VALUES ('fk_cascade');
INSERT INTO ht(time, fk_cascade) VALUES ('2020-01-01', 'fk_cascade');
-- should cascade
DELETE FROM fk_cascade;
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(1 row)

ROLLBACK;
-- ON DELETE CASCADE with compression without direct batch delete
SET timescaledb.enable_compressed_direct_batch_delete TO false;
BEGIN;
INSERT INTO fk_cascade(fk_cascade) VALUES ('fk_cascade');
INSERT INTO ht(time, fk_cascade) VALUES ('2020-01-01', 'fk_cascade');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should cascade
DELETE FROM fk_cascade;
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(1 row)

EXPLAIN (analyze, costs off, timing off, summary off) SELECT * FROM ht;
                                    QUERY PLAN                                     
-----------------------------------------------------------------------------------
 Append (actual rows=1 loops=1)
   ->  Custom Scan (DecompressChunk) on _hyper_13_14_chunk (actual rows=1 loops=1)
         ->  Seq Scan on compress_hyper_14_20_chunk (actual rows=1 loops=1)
   ->  Seq Scan on _hyper_13_14_chunk (actual rows=0 loops=1)
(4 rows)

ROLLBACK;
RESET timescaledb.enable_compressed_direct_batch_delete;
-- ON DELETE CASCADE with compression and direct batch delete
BEGIN;
INSERT INTO fk_cascade(fk_cascade) VALUES ('fk_cascade');
INSERT INTO ht(time, fk_cascade) VALUES ('2020-01-01', 'fk_cascade');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should cascade
DELETE FROM fk_cascade;
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(1 row)

EXPLAIN (analyze, costs off, timing off, summary off) SELECT * FROM ht;
                                 QUERY PLAN                                  
-----------------------------------------------------------------------------
 Custom Scan (DecompressChunk) on _hyper_13_14_chunk (actual rows=1 loops=1)
   ->  Seq Scan on compress_hyper_14_21_chunk (actual rows=1 loops=1)
(2 rows)

ROLLBACK;
-- SET NULL
-- should fail with foreign key violation
INSERT INTO ht(time, fk_set_null) VALUES ('2020-01-01', 'fk_set_null');
ERROR:  insert or update on table "_hyper_13_14_chunk" violates foreign key constraint "14_17_ht_fk_set_null_fkey"
-- ON UPDATE SET NULL
BEGIN;
INSERT INTO fk_set_null(fk_set_null) VALUES ('fk_set_null');
INSERT INTO ht(time, fk_set_null) VALUES ('2020-01-01', 'fk_set_null');
-- should set column to null
UPDATE fk_set_null SET fk_set_null = 'fk_set_null_updated';
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(2 rows)

ROLLBACK;
-- ON UPDATE SET NULL with compression
BEGIN;
INSERT INTO fk_set_null(fk_set_null) VALUES ('fk_set_null');
INSERT INTO ht(time, fk_set_null) VALUES ('2020-01-01', 'fk_set_null');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should set column to null
UPDATE fk_set_null SET fk_set_null = 'fk_set_null_updated';
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(2 rows)

EXPLAIN (analyze, costs off, timing off, summary off) SELECT * FROM ht;
                                    QUERY PLAN                                     
-----------------------------------------------------------------------------------
 Append (actual rows=2 loops=1)
   ->  Custom Scan (DecompressChunk) on _hyper_13_14_chunk (actual rows=1 loops=1)
         ->  Seq Scan on compress_hyper_14_22_chunk (actual rows=1 loops=1)
   ->  Seq Scan on _hyper_13_14_chunk (actual rows=1 loops=1)
(4 rows)

ROLLBACK;
-- ON DELETE SET NULL
BEGIN;
INSERT INTO fk_set_null(fk_set_null) VALUES ('fk_set_null');
INSERT INTO ht(time, fk_set_null) VALUES ('2020-01-01', 'fk_set_null');
-- should set column to null
DELETE FROM fk_set_null;
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(2 rows)

ROLLBACK;
-- ON DELETE SET NULL with compression
BEGIN;
INSERT INTO fk_set_null(fk_set_null) VALUES ('fk_set_null');
INSERT INTO ht(time, fk_set_null) VALUES ('2020-01-01', 'fk_set_null');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

-- should set column to null
DELETE FROM fk_set_null;
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(2 rows)

EXPLAIN (analyze, costs off, timing off, summary off) SELECT * FROM ht;
                                    QUERY PLAN                                     
-----------------------------------------------------------------------------------
 Append (actual rows=2 loops=1)
   ->  Custom Scan (DecompressChunk) on _hyper_13_14_chunk (actual rows=1 loops=1)
         ->  Seq Scan on compress_hyper_14_23_chunk (actual rows=1 loops=1)
   ->  Seq Scan on _hyper_13_14_chunk (actual rows=1 loops=1)
(4 rows)

ROLLBACK;
-- SET DEFAULT
-- should fail with foreign key violation
INSERT INTO ht(time, fk_set_default) VALUES ('2020-01-01', 'fk_set_default');
ERROR:  insert or update on table "_hyper_13_14_chunk" violates foreign key constraint "14_16_ht_fk_set_default_fkey"
-- ON UPDATE SET DEFAULT
BEGIN;
INSERT INTO fk_set_default(fk_set_default) VALUES ('fk_set_default');
INSERT INTO ht(time, fk_set_default) VALUES ('2020-01-01', 'fk_set_default');
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | fk_set_default
(2 rows)

UPDATE fk_set_default SET fk_set_default = 'fk_set_default_updated' WHERE fk_set_default = 'fk_set_default';
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(2 rows)

ROLLBACK;
-- ON UPDATE SET DEFAULT with compression
BEGIN;
INSERT INTO fk_set_default(fk_set_default) VALUES ('fk_set_default');
INSERT INTO ht(time, fk_set_default) VALUES ('2020-01-01', 'fk_set_default');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | fk_set_default
(2 rows)

UPDATE fk_set_default SET fk_set_default = 'fk_set_default_updated' WHERE fk_set_default = 'fk_set_default';
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(2 rows)

EXPLAIN (analyze, costs off, timing off, summary off) SELECT * FROM ht;
                                    QUERY PLAN                                     
-----------------------------------------------------------------------------------
 Append (actual rows=2 loops=1)
   ->  Custom Scan (DecompressChunk) on _hyper_13_14_chunk (actual rows=1 loops=1)
         ->  Seq Scan on compress_hyper_14_24_chunk (actual rows=1 loops=1)
   ->  Seq Scan on _hyper_13_14_chunk (actual rows=1 loops=1)
(4 rows)

ROLLBACK;
-- ON DELETE SET DEFAULT
BEGIN;
INSERT INTO fk_set_default(fk_set_default) VALUES ('fk_set_default');
INSERT INTO ht(time, fk_set_default) VALUES ('2020-01-01', 'fk_set_default');
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | fk_set_default
(2 rows)

DELETE FROM fk_set_default WHERE fk_set_default = 'fk_set_default';
ROLLBACK;
-- ON DELETE SET DEFAULT with compression
BEGIN;
INSERT INTO fk_set_default(fk_set_default) VALUES ('fk_set_default');
INSERT INTO ht(time, fk_set_default) VALUES ('2020-01-01', 'fk_set_default');
SELECT count(compress_chunk(ch)) FROM show_chunks('ht') ch;
 count 
-------
     1
(1 row)

SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | fk_set_default
(2 rows)

DELETE FROM fk_set_default WHERE fk_set_default = 'fk_set_default';
SELECT * FROM ht;
             time             | fk_no_action | fk_restrict | fk_cascade | fk_set_null | fk_set_default 
------------------------------+--------------+-------------+------------+-------------+----------------
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
 Wed Jan 01 00:00:00 2020 PST |              |             |            |             | default
(2 rows)

EXPLAIN (analyze, costs off, timing off, summary off) SELECT * FROM ht;
                                    QUERY PLAN                                     
-----------------------------------------------------------------------------------
 Append (actual rows=2 loops=1)
   ->  Custom Scan (DecompressChunk) on _hyper_13_14_chunk (actual rows=1 loops=1)
         ->  Seq Scan on compress_hyper_14_25_chunk (actual rows=1 loops=1)
   ->  Seq Scan on _hyper_13_14_chunk (actual rows=1 loops=1)
(4 rows)

ROLLBACK;
-- #7226
-- test multi-column fk constraint where constraint column order is different from index column order
CREATE TABLE i7226(time timestamptz, device_id int, PRIMARY KEY (device_id, time));
SELECT create_hypertable('i7226', 'time');
  create_hypertable  
---------------------
 (15,public,i7226,t)
(1 row)

CREATE TABLE i7226_valid(time timestamptz NOT NULL,device_id int NOT NULL, FOREIGN KEY(time, device_id) REFERENCES i7226(time, device_id));
INSERT INTO i7226 VALUES ('2024-08-29 12:00:00+00', 1);
-- test foreign key constraints that have been created before hypertable conversion
create table converted_pk(time timestamptz, id int, unique(time, id));
create table converted_fk(time timestamptz, id int, foreign key (time, id) references converted_pk(time, id));
select table_name FROM create_hypertable ('converted_pk', 'time');
NOTICE:  adding not-null constraint to column "time"
  table_name  
--------------
 converted_pk
(1 row)

\set ON_ERROR_STOP 0
-- should fail
INSERT INTO converted_fk SELECT '2020-01-01', 1;
ERROR:  insert or update on table "converted_fk" violates foreign key constraint "converted_fk_time_id_fkey"
\set ON_ERROR_STOP 1
INSERT INTO converted_pk SELECT '2020-01-01 0:01', 1;
\set ON_ERROR_STOP 0
-- should still fail
INSERT INTO converted_fk SELECT '2020-01-01', 1;
ERROR:  insert or update on table "converted_fk" violates foreign key constraint "converted_fk_time_id_fkey"
\set ON_ERROR_STOP 1
INSERT INTO converted_fk SELECT '2020-01-01 0:01', 1;
\set ON_ERROR_STOP 0
-- should fail
DELETE FROM converted_pk WHERE time = '2020-01-01 0:01';
ERROR:  update or delete on table "_hyper_16_27_chunk" violates foreign key constraint "converted_fk_time_id_fkey1" on table "converted_fk"
TRUNCATE converted_pk;
ERROR:  cannot truncate a table referenced in a foreign key constraint
\set ON_ERROR_STOP 1
DELETE FROM converted_fk;
DELETE FROM converted_pk WHERE time = '2020-01-01 0:01';