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|
--
\set VERBOSITY terse
\set QUIET 0
-- Test triggers.
--
-- Don't use pg10-specific stuff here; that goes in triggers_10.sql
create table trigtst (
id integer primary key,
name text,
flag boolean,
qty integer,
weight numeric
);
CREATE TABLE
create function misctrig() returns trigger language pllua
as $$
print(trigger.name,...)
print(trigger.when, trigger.level, trigger.operation, trigger.relation.name)
if trigger.level == "row" then
print(old,new)
end
$$;
CREATE FUNCTION
create trigger t1
before insert or update or delete on trigtst
for each statement
execute procedure misctrig('foo','bar');
CREATE TRIGGER
create trigger t2
after insert or update or delete on trigtst
for each statement
execute procedure misctrig('foo','bar');
CREATE TRIGGER
insert into trigtst
values (1, 'fred', true, 23, 1.73),
(2, 'jim', false, 11, 3.1),
(3, 'sheila', false, 9, 1.3),
(4, 'dougal', false, 1, 9.3),
(5, 'brian', false, 31, 51.5),
(6, 'ermintrude', true, 91, 52.7),
(7, 'dylan', false, 35, 12.1),
(8, 'florence', false, 23, 5.4),
(9, 'zebedee', false, 199, 7.4);
INFO: t1 foo bar
INFO: before statement insert trigtst
INFO: t2 foo bar
INFO: after statement insert trigtst
INSERT 0 9
update trigtst set qty = qty + 1;
INFO: t1 foo bar
INFO: before statement update trigtst
INFO: t2 foo bar
INFO: after statement update trigtst
UPDATE 9
delete from trigtst where name = 'sheila';
INFO: t1 foo bar
INFO: before statement delete trigtst
INFO: t2 foo bar
INFO: after statement delete trigtst
DELETE 1
create trigger t3
before insert or update or delete on trigtst
for each row
execute procedure misctrig('wot');
CREATE TRIGGER
create trigger t4
after insert or update or delete on trigtst
for each row
execute procedure misctrig('wot');
CREATE TRIGGER
insert into trigtst values (3, 'sheila', false, 9, 1.3);
INFO: t1 foo bar
INFO: before statement insert trigtst
INFO: t3 wot
INFO: before row insert trigtst
INFO: nil (3,sheila,f,9,1.3)
INFO: t4 wot
INFO: after row insert trigtst
INFO: nil (3,sheila,f,9,1.3)
INFO: t2 foo bar
INFO: after statement insert trigtst
INSERT 0 1
update trigtst set flag = true where name = 'dylan';
INFO: t1 foo bar
INFO: before statement update trigtst
INFO: t3 wot
INFO: before row update trigtst
INFO: (7,dylan,f,36,12.1) (7,dylan,t,36,12.1)
INFO: t4 wot
INFO: after row update trigtst
INFO: (7,dylan,f,36,12.1) (7,dylan,t,36,12.1)
INFO: t2 foo bar
INFO: after statement update trigtst
UPDATE 1
delete from trigtst where name = 'jim';
INFO: t1 foo bar
INFO: before statement delete trigtst
INFO: t3 wot
INFO: before row delete trigtst
INFO: (2,jim,f,12,3.1) nil
INFO: t4 wot
INFO: after row delete trigtst
INFO: (2,jim,f,12,3.1) nil
INFO: t2 foo bar
INFO: after statement delete trigtst
DELETE 1
-- check result is as expected
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
1 | fred | t | 24 | 1.73
3 | sheila | f | 9 | 1.3
4 | dougal | f | 2 | 9.3
5 | brian | f | 32 | 51.5
6 | ermintrude | t | 92 | 52.7
7 | dylan | t | 36 | 12.1
8 | florence | f | 24 | 5.4
9 | zebedee | f | 200 | 7.4
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
drop trigger t2 on trigtst;
DROP TRIGGER
drop trigger t3 on trigtst;
DROP TRIGGER
drop trigger t4 on trigtst;
DROP TRIGGER
-- compatible mode: assign to row fields
create function modtrig1() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
trigger.row.weight = 10 * trigger.row.qty
trigger.row.flag = false
print(trigger.name,trigger.operation,old,new)
$$;
CREATE FUNCTION
create trigger t1
before insert or update or delete on trigtst
for each row
execute procedure modtrig1();
CREATE TRIGGER
insert into trigtst values (2, 'jim', true, 11, 3.1);
INFO: t1 insert nil (2,jim,t,11,3.1)
INFO: t1 insert nil (2,jim,f,11,110)
INSERT 0 1
update trigtst set flag = true where name = 'ermintrude';
INFO: t1 update (6,ermintrude,t,92,52.7) (6,ermintrude,t,92,52.7)
INFO: t1 update (6,ermintrude,t,92,52.7) (6,ermintrude,f,92,920)
UPDATE 1
delete from trigtst where name = 'fred';
INFO: t1 delete (1,fred,t,24,1.73) nil
INFO: t1 delete (1,fred,f,24,240) nil
DELETE 1
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
2 | jim | f | 11 | 110
3 | sheila | f | 9 | 1.3
4 | dougal | f | 2 | 9.3
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 36 | 12.1
8 | florence | f | 24 | 5.4
9 | zebedee | f | 200 | 7.4
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- compatible mode: assign to row wholesale
create function modtrig2() returns trigger language pllua
as $$
print(trigger.name,trigger.op,old,new)
local id,name,flag,qty,weight = new.id, new.name, new.flag, new.qty, new.weight
qty = 2 + qty
weight = weight * 2
flag = not flag
trigger.row = { id = id, name = name, flag = flag, qty = qty, weight = weight }
$$;
CREATE FUNCTION
create trigger t1
before insert or update on trigtst
for each row
execute procedure modtrig2();
CREATE TRIGGER
insert into trigtst values (1, 'fred', true, 23, 1.73);
INFO: t1 insert nil (1,fred,t,23,1.73)
INSERT 0 1
update trigtst set flag = true where name = 'zebedee';
INFO: t1 update (9,zebedee,f,200,7.4) (9,zebedee,t,200,7.4)
UPDATE 1
delete from trigtst where name = 'jim';
DELETE 1
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
1 | fred | f | 25 | 3.46
3 | sheila | f | 9 | 1.3
4 | dougal | f | 2 | 9.3
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 36 | 12.1
8 | florence | f | 24 | 5.4
9 | zebedee | f | 202 | 14.8
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- compatible mode: assign to row wholesale with new datum row
create function modtrig3() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
local id,name,flag,qty,weight = new.id, new.name, new.flag, new.qty, new.weight
qty = 2 + qty
weight = weight * 2
flag = not flag
trigger.row = pgtype(new)(id,name,flag,qty,weight)
$$;
CREATE FUNCTION
create trigger t1
before insert or update on trigtst
for each row
execute procedure modtrig3();
CREATE TRIGGER
insert into trigtst values (2, 'jim', false, 11, 3.1);
INFO: t1 insert nil (2,jim,f,11,3.1)
INSERT 0 1
update trigtst set flag = true where name = 'zebedee';
INFO: t1 update (9,zebedee,f,202,14.8) (9,zebedee,t,202,14.8)
UPDATE 1
delete from trigtst where name = 'fred';
DELETE 1
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
2 | jim | t | 13 | 6.2
3 | sheila | f | 9 | 1.3
4 | dougal | f | 2 | 9.3
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 36 | 12.1
8 | florence | f | 24 | 5.4
9 | zebedee | f | 204 | 29.6
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- return value mode
create function modtrig4() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
local id,name,flag,qty,weight = new.id, new.name, new.flag, new.qty, new.weight
qty = 2 + qty
weight = weight * 2
flag = not flag
return { id = id, name = name, flag = flag, qty = qty, weight = weight }
$$;
CREATE FUNCTION
create trigger t1
before insert or update on trigtst
for each row
execute procedure modtrig4();
CREATE TRIGGER
insert into trigtst values (1, 'fred', true, 23, 1.73);
INFO: t1 insert nil (1,fred,t,23,1.73)
INSERT 0 1
update trigtst set flag = false where name = 'dylan';
INFO: t1 update (7,dylan,t,36,12.1) (7,dylan,f,36,12.1)
UPDATE 1
delete from trigtst where name = 'jim';
DELETE 1
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
1 | fred | f | 25 | 3.46
3 | sheila | f | 9 | 1.3
4 | dougal | f | 2 | 9.3
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 38 | 24.2
8 | florence | f | 24 | 5.4
9 | zebedee | f | 204 | 29.6
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- return value mode
create function modtrig5() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
local id,name,flag,qty,weight = new.id, new.name, new.flag, new.qty, new.weight
qty = 2 + qty
weight = weight * 2
flag = not flag
return pgtype(new)(id,name,flag,qty,weight)
$$;
CREATE FUNCTION
create trigger t1
before insert or update on trigtst
for each row
execute procedure modtrig5();
CREATE TRIGGER
insert into trigtst values (2, 'jim', false, 11, 3.1);
INFO: t1 insert nil (2,jim,f,11,3.1)
INSERT 0 1
update trigtst set flag = false where name = 'dougal';
INFO: t1 update (4,dougal,f,2,9.3) (4,dougal,f,2,9.3)
UPDATE 1
delete from trigtst where name = 'fred';
DELETE 1
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
2 | jim | t | 13 | 6.2
3 | sheila | f | 9 | 1.3
4 | dougal | t | 4 | 18.6
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 38 | 24.2
8 | florence | f | 24 | 5.4
9 | zebedee | f | 204 | 29.6
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- throw error from trigger
create function modtrig6() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
if new.flag ~= old.flag then error("no changing flags") end
$$;
CREATE FUNCTION
create trigger t1
before update on trigtst
for each row
execute procedure modtrig6();
CREATE TRIGGER
update trigtst set flag = false where name = 'dougal';
INFO: t1 update (4,dougal,t,4,18.6) (4,dougal,f,4,18.6)
ERROR: pllua: [string "modtrig6"]:3: no changing flags
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
2 | jim | t | 13 | 6.2
3 | sheila | f | 9 | 1.3
4 | dougal | t | 4 | 18.6
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 38 | 24.2
8 | florence | f | 24 | 5.4
9 | zebedee | f | 204 | 29.6
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- throw error from trigger
create function modtrig7() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
if new.flag ~= old.flag then error("no changing flags") end
$$;
CREATE FUNCTION
create trigger t1
before update on trigtst
for each row
execute procedure modtrig7();
CREATE TRIGGER
update trigtst set flag = true where name = 'florence';
INFO: t1 update (8,florence,f,24,5.4) (8,florence,t,24,5.4)
ERROR: pllua: [string "modtrig7"]:3: no changing flags
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
2 | jim | t | 13 | 6.2
3 | sheila | f | 9 | 1.3
4 | dougal | t | 4 | 18.6
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 38 | 24.2
8 | florence | f | 24 | 5.4
9 | zebedee | f | 204 | 29.6
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- suppress action 1
create function modtrig8() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
if new.flag ~= old.flag then return nil end
$$;
CREATE FUNCTION
create trigger t1
before update on trigtst
for each row
execute procedure modtrig8();
CREATE TRIGGER
update trigtst set flag = true where name = 'florence';
INFO: t1 update (8,florence,f,24,5.4) (8,florence,t,24,5.4)
UPDATE 0
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
2 | jim | t | 13 | 6.2
3 | sheila | f | 9 | 1.3
4 | dougal | t | 4 | 18.6
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 38 | 24.2
8 | florence | f | 24 | 5.4
9 | zebedee | f | 204 | 29.6
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- suppress action 2
create function modtrig9() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
if new.flag ~= old.flag then trigger.row = nil end
$$;
CREATE FUNCTION
create trigger t1
before update on trigtst
for each row
execute procedure modtrig9();
CREATE TRIGGER
update trigtst set flag = true where name = 'florence';
INFO: t1 update (8,florence,f,24,5.4) (8,florence,t,24,5.4)
UPDATE 0
select * from trigtst order by id;
id | name | flag | qty | weight
----+------------+------+-----+--------
2 | jim | t | 13 | 6.2
3 | sheila | f | 9 | 1.3
4 | dougal | t | 4 | 18.6
5 | brian | f | 32 | 51.5
6 | ermintrude | f | 92 | 920
7 | dylan | t | 38 | 24.2
8 | florence | f | 24 | 5.4
9 | zebedee | f | 204 | 29.6
(8 rows)
drop trigger t1 on trigtst;
DROP TRIGGER
-- table with one column exercises several edge cases:
create table trigtst1col (col integer);
CREATE TABLE
create function modtrig10() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
new.col = 123
$$;
CREATE FUNCTION
create trigger t1
before insert on trigtst1col
for each row
execute procedure modtrig10();
CREATE TRIGGER
insert into trigtst1col values (1);
INFO: t1 insert nil (1)
INSERT 0 1
insert into trigtst1col values (2);
INFO: t1 insert nil (2)
INSERT 0 1
select * from trigtst1col;
col
-----
123
123
(2 rows)
create type t2col as (a integer, b text);
CREATE TYPE
create table trigtst1col2 (col t2col);
CREATE TABLE
create function modtrig11() returns trigger language pllua
as $$
print(trigger.name,trigger.operation,old,new)
new.col.a = 123
$$;
CREATE FUNCTION
create trigger t1
before insert on trigtst1col2
for each row
execute procedure modtrig11();
CREATE TRIGGER
insert into trigtst1col2 values (row(1,'foo')::t2col);
INFO: t1 insert nil ("(1,foo)")
INSERT 0 1
select * from trigtst1col2;
col
-----------
(123,foo)
(1 row)
-- exercise dropped columns:
create table trigtst1dcol (col text, dcol text);
CREATE TABLE
alter table trigtst1dcol drop column dcol;
ALTER TABLE
create trigger t1
after insert or update or delete on trigtst1dcol
for each row
execute procedure misctrig('blah');
CREATE TRIGGER
insert into trigtst1dcol values ('foo');
INFO: t1 blah
INFO: after row insert trigtst1dcol
INFO: nil (foo)
INSERT 0 1
update trigtst1dcol set col = 'bar';
INFO: t1 blah
INFO: after row update trigtst1dcol
INFO: (foo) (bar)
UPDATE 1
delete from trigtst1dcol;
INFO: t1 blah
INFO: after row delete trigtst1dcol
INFO: (bar) nil
DELETE 1
--
|
