postgresql/src/test/regress/expected/event_trigger.out

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-- should fail, return type mismatch
create event trigger regress_event_trigger
on ddl_command_start
execute procedure pg_backend_pid();
ERROR: function pg_backend_pid must return type event_trigger
-- OK
create function test_event_trigger() returns event_trigger as $$
BEGIN
RAISE NOTICE 'test_event_trigger: % %', tg_event, tg_tag;
END
$$ language plpgsql;
-- should fail, can't call it as a plain function
SELECT test_event_trigger();
ERROR: trigger functions can only be called as triggers
CONTEXT: compilation of PL/pgSQL function "test_event_trigger" near line 1
-- should fail, event triggers cannot have declared arguments
create function test_event_trigger_arg(name text)
returns event_trigger as $$ BEGIN RETURN 1; END $$ language plpgsql;
ERROR: event trigger functions cannot have declared arguments
CONTEXT: compilation of PL/pgSQL function "test_event_trigger_arg" near line 1
-- should fail, SQL functions cannot be event triggers
create function test_event_trigger_sql() returns event_trigger as $$
SELECT 1 $$ language sql;
ERROR: SQL functions cannot return type event_trigger
-- should fail, no elephant_bootstrap entry point
create event trigger regress_event_trigger on elephant_bootstrap
execute procedure test_event_trigger();
ERROR: unrecognized event name "elephant_bootstrap"
-- OK
create event trigger regress_event_trigger on ddl_command_start
execute procedure test_event_trigger();
-- OK
create event trigger regress_event_trigger_end on ddl_command_end
execute function test_event_trigger();
-- should fail, food is not a valid filter variable
create event trigger regress_event_trigger2 on ddl_command_start
when food in ('sandwich')
execute procedure test_event_trigger();
ERROR: unrecognized filter variable "food"
-- should fail, sandwich is not a valid command tag
create event trigger regress_event_trigger2 on ddl_command_start
when tag in ('sandwich')
execute procedure test_event_trigger();
ERROR: filter value "sandwich" not recognized for filter variable "tag"
-- should fail, create skunkcabbage is not a valid command tag
create event trigger regress_event_trigger2 on ddl_command_start
when tag in ('create table', 'create skunkcabbage')
execute procedure test_event_trigger();
ERROR: filter value "create skunkcabbage" not recognized for filter variable "tag"
-- should fail, can't have event triggers on event triggers
create event trigger regress_event_trigger2 on ddl_command_start
when tag in ('DROP EVENT TRIGGER')
execute procedure test_event_trigger();
ERROR: event triggers are not supported for DROP EVENT TRIGGER
-- should fail, can't have event triggers on global objects
create event trigger regress_event_trigger2 on ddl_command_start
when tag in ('CREATE ROLE')
execute procedure test_event_trigger();
ERROR: event triggers are not supported for CREATE ROLE
-- should fail, can't have event triggers on global objects
create event trigger regress_event_trigger2 on ddl_command_start
when tag in ('CREATE DATABASE')
execute procedure test_event_trigger();
ERROR: event triggers are not supported for CREATE DATABASE
-- should fail, can't have event triggers on global objects
create event trigger regress_event_trigger2 on ddl_command_start
when tag in ('CREATE TABLESPACE')
execute procedure test_event_trigger();
ERROR: event triggers are not supported for CREATE TABLESPACE
-- should fail, can't have same filter variable twice
create event trigger regress_event_trigger2 on ddl_command_start
when tag in ('create table') and tag in ('CREATE FUNCTION')
execute procedure test_event_trigger();
ERROR: filter variable "tag" specified more than once
-- should fail, can't have arguments
create event trigger regress_event_trigger2 on ddl_command_start
execute procedure test_event_trigger('argument not allowed');
ERROR: syntax error at or near "'argument not allowed'"
LINE 2: execute procedure test_event_trigger('argument not allowe...
^
-- OK
create event trigger regress_event_trigger2 on ddl_command_start
when tag in ('create table', 'CREATE FUNCTION')
execute procedure test_event_trigger();
-- OK
comment on event trigger regress_event_trigger is 'test comment';
-- drop as non-superuser should fail
create role regress_evt_user;
set role regress_evt_user;
create event trigger regress_event_trigger_noperms on ddl_command_start
execute procedure test_event_trigger();
ERROR: permission denied to create event trigger "regress_event_trigger_noperms"
HINT: Must be superuser to create an event trigger.
reset role;
-- test enabling and disabling
alter event trigger regress_event_trigger disable;
-- fires _trigger2 and _trigger_end should fire, but not _trigger
create table event_trigger_fire1 (a int);
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
NOTICE: test_event_trigger: ddl_command_end CREATE TABLE
alter event trigger regress_event_trigger enable;
set session_replication_role = replica;
-- fires nothing
create table event_trigger_fire2 (a int);
alter event trigger regress_event_trigger enable replica;
-- fires only _trigger
create table event_trigger_fire3 (a int);
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
alter event trigger regress_event_trigger enable always;
-- fires only _trigger
create table event_trigger_fire4 (a int);
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
reset session_replication_role;
-- fires all three
create table event_trigger_fire5 (a int);
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
NOTICE: test_event_trigger: ddl_command_end CREATE TABLE
-- non-top-level command
create function f1() returns int
language plpgsql
as $$
begin
create table event_trigger_fire6 (a int);
return 0;
end $$;
NOTICE: test_event_trigger: ddl_command_start CREATE FUNCTION
NOTICE: test_event_trigger: ddl_command_start CREATE FUNCTION
NOTICE: test_event_trigger: ddl_command_end CREATE FUNCTION
select f1();
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
NOTICE: test_event_trigger: ddl_command_end CREATE TABLE
f1
----
0
(1 row)
-- non-top-level command
create procedure p1()
language plpgsql
as $$
begin
create table event_trigger_fire7 (a int);
end $$;
NOTICE: test_event_trigger: ddl_command_start CREATE PROCEDURE
NOTICE: test_event_trigger: ddl_command_end CREATE PROCEDURE
call p1();
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
NOTICE: test_event_trigger: ddl_command_start CREATE TABLE
NOTICE: test_event_trigger: ddl_command_end CREATE TABLE
-- clean up
alter event trigger regress_event_trigger disable;
drop table event_trigger_fire2, event_trigger_fire3, event_trigger_fire4, event_trigger_fire5, event_trigger_fire6, event_trigger_fire7;
NOTICE: test_event_trigger: ddl_command_end DROP TABLE
drop routine f1(), p1();
NOTICE: test_event_trigger: ddl_command_end DROP ROUTINE
-- regress_event_trigger_end should fire on these commands
grant all on table event_trigger_fire1 to public;
NOTICE: test_event_trigger: ddl_command_end GRANT
comment on table event_trigger_fire1 is 'here is a comment';
NOTICE: test_event_trigger: ddl_command_end COMMENT
revoke all on table event_trigger_fire1 from public;
NOTICE: test_event_trigger: ddl_command_end REVOKE
drop table event_trigger_fire1;
NOTICE: test_event_trigger: ddl_command_end DROP TABLE
create foreign data wrapper useless;
NOTICE: test_event_trigger: ddl_command_end CREATE FOREIGN DATA WRAPPER
create server useless_server foreign data wrapper useless;
NOTICE: test_event_trigger: ddl_command_end CREATE SERVER
create user mapping for regress_evt_user server useless_server;
NOTICE: test_event_trigger: ddl_command_end CREATE USER MAPPING
alter default privileges for role regress_evt_user
revoke delete on tables from regress_evt_user;
NOTICE: test_event_trigger: ddl_command_end ALTER DEFAULT PRIVILEGES
-- alter owner to non-superuser should fail
alter event trigger regress_event_trigger owner to regress_evt_user;
ERROR: permission denied to change owner of event trigger "regress_event_trigger"
HINT: The owner of an event trigger must be a superuser.
-- alter owner to superuser should work
alter role regress_evt_user superuser;
alter event trigger regress_event_trigger owner to regress_evt_user;
-- should fail, name collision
alter event trigger regress_event_trigger rename to regress_event_trigger2;
ERROR: event trigger "regress_event_trigger2" already exists
-- OK
alter event trigger regress_event_trigger rename to regress_event_trigger3;
-- should fail, doesn't exist any more
drop event trigger regress_event_trigger;
ERROR: event trigger "regress_event_trigger" does not exist
-- should fail, regress_evt_user owns some objects
drop role regress_evt_user;
ERROR: role "regress_evt_user" cannot be dropped because some objects depend on it
DETAIL: owner of event trigger regress_event_trigger3
owner of user mapping for regress_evt_user on server useless_server
owner of default privileges on new relations belonging to role regress_evt_user
-- cleanup before next test
-- these are all OK; the second one should emit a NOTICE
drop event trigger if exists regress_event_trigger2;
drop event trigger if exists regress_event_trigger2;
NOTICE: event trigger "regress_event_trigger2" does not exist, skipping
drop event trigger regress_event_trigger3;
drop event trigger regress_event_trigger_end;
-- test support for dropped objects
CREATE SCHEMA schema_one authorization regress_evt_user;
CREATE SCHEMA schema_two authorization regress_evt_user;
CREATE SCHEMA audit_tbls authorization regress_evt_user;
CREATE TEMP TABLE a_temp_tbl ();
SET SESSION AUTHORIZATION regress_evt_user;
CREATE TABLE schema_one.table_one(a int);
CREATE TABLE schema_one."table two"(a int);
CREATE TABLE schema_one.table_three(a int);
CREATE TABLE audit_tbls.schema_one_table_two(the_value text);
CREATE TABLE schema_two.table_two(a int);
CREATE TABLE schema_two.table_three(a int, b text);
CREATE TABLE audit_tbls.schema_two_table_three(the_value text);
CREATE OR REPLACE FUNCTION schema_two.add(int, int) RETURNS int LANGUAGE plpgsql
CALLED ON NULL INPUT
AS $$ BEGIN RETURN coalesce($1,0) + coalesce($2,0); END; $$;
CREATE AGGREGATE schema_two.newton
(BASETYPE = int, SFUNC = schema_two.add, STYPE = int);
RESET SESSION AUTHORIZATION;
CREATE TABLE undroppable_objs (
object_type text,
object_identity text
);
INSERT INTO undroppable_objs VALUES
('table', 'schema_one.table_three'),
('table', 'audit_tbls.schema_two_table_three');
CREATE TABLE dropped_objects (
type text,
schema text,
object text
);
-- This tests errors raised within event triggers; the one in audit_tbls
-- uses 2nd-level recursive invocation via test_evtrig_dropped_objects().
CREATE OR REPLACE FUNCTION undroppable() RETURNS event_trigger
LANGUAGE plpgsql AS $$
DECLARE
obj record;
BEGIN
PERFORM 1 FROM pg_tables WHERE tablename = 'undroppable_objs';
IF NOT FOUND THEN
RAISE NOTICE 'table undroppable_objs not found, skipping';
RETURN;
END IF;
FOR obj IN
SELECT * FROM pg_event_trigger_dropped_objects() JOIN
undroppable_objs USING (object_type, object_identity)
LOOP
RAISE EXCEPTION 'object % of type % cannot be dropped',
obj.object_identity, obj.object_type;
END LOOP;
END;
$$;
CREATE EVENT TRIGGER undroppable ON sql_drop
EXECUTE PROCEDURE undroppable();
CREATE OR REPLACE FUNCTION test_evtrig_dropped_objects() RETURNS event_trigger
LANGUAGE plpgsql AS $$
DECLARE
obj record;
BEGIN
FOR obj IN SELECT * FROM pg_event_trigger_dropped_objects()
LOOP
IF obj.object_type = 'table' THEN
EXECUTE format('DROP TABLE IF EXISTS audit_tbls.%I',
format('%s_%s', obj.schema_name, obj.object_name));
END IF;
INSERT INTO dropped_objects
(type, schema, object) VALUES
(obj.object_type, obj.schema_name, obj.object_identity);
END LOOP;
END
$$;
CREATE EVENT TRIGGER regress_event_trigger_drop_objects ON sql_drop
WHEN TAG IN ('drop table', 'drop function', 'drop view',
'drop owned', 'drop schema', 'alter table')
EXECUTE PROCEDURE test_evtrig_dropped_objects();
ALTER TABLE schema_one.table_one DROP COLUMN a;
DROP SCHEMA schema_one, schema_two CASCADE;
NOTICE: drop cascades to 7 other objects
DETAIL: drop cascades to table schema_two.table_two
drop cascades to table schema_two.table_three
drop cascades to function schema_two.add(integer,integer)
drop cascades to function schema_two.newton(integer)
drop cascades to table schema_one.table_one
drop cascades to table schema_one."table two"
drop cascades to table schema_one.table_three
NOTICE: table "schema_two_table_two" does not exist, skipping
NOTICE: table "audit_tbls_schema_two_table_three" does not exist, skipping
ERROR: object audit_tbls.schema_two_table_three of type table cannot be dropped
CONTEXT: PL/pgSQL function undroppable() line 14 at RAISE
SQL statement "DROP TABLE IF EXISTS audit_tbls.schema_two_table_three"
PL/pgSQL function test_evtrig_dropped_objects() line 8 at EXECUTE
DELETE FROM undroppable_objs WHERE object_identity = 'audit_tbls.schema_two_table_three';
DROP SCHEMA schema_one, schema_two CASCADE;
NOTICE: drop cascades to 7 other objects
DETAIL: drop cascades to table schema_two.table_two
drop cascades to table schema_two.table_three
drop cascades to function schema_two.add(integer,integer)
drop cascades to function schema_two.newton(integer)
drop cascades to table schema_one.table_one
drop cascades to table schema_one."table two"
drop cascades to table schema_one.table_three
NOTICE: table "schema_two_table_two" does not exist, skipping
NOTICE: table "audit_tbls_schema_two_table_three" does not exist, skipping
NOTICE: table "schema_one_table_one" does not exist, skipping
NOTICE: table "schema_one_table two" does not exist, skipping
NOTICE: table "schema_one_table_three" does not exist, skipping
ERROR: object schema_one.table_three of type table cannot be dropped
CONTEXT: PL/pgSQL function undroppable() line 14 at RAISE
DELETE FROM undroppable_objs WHERE object_identity = 'schema_one.table_three';
DROP SCHEMA schema_one, schema_two CASCADE;
NOTICE: drop cascades to 7 other objects
DETAIL: drop cascades to table schema_two.table_two
drop cascades to table schema_two.table_three
drop cascades to function schema_two.add(integer,integer)
drop cascades to function schema_two.newton(integer)
drop cascades to table schema_one.table_one
drop cascades to table schema_one."table two"
drop cascades to table schema_one.table_three
NOTICE: table "schema_two_table_two" does not exist, skipping
NOTICE: table "audit_tbls_schema_two_table_three" does not exist, skipping
NOTICE: table "schema_one_table_one" does not exist, skipping
NOTICE: table "schema_one_table two" does not exist, skipping
NOTICE: table "schema_one_table_three" does not exist, skipping
SELECT * FROM dropped_objects WHERE schema IS NULL OR schema <> 'pg_toast';
type | schema | object
--------------+------------+-------------------------------------
table column | schema_one | schema_one.table_one.a
schema | | schema_two
table | schema_two | schema_two.table_two
type | schema_two | schema_two.table_two
type | schema_two | schema_two.table_two[]
table | audit_tbls | audit_tbls.schema_two_table_three
type | audit_tbls | audit_tbls.schema_two_table_three
type | audit_tbls | audit_tbls.schema_two_table_three[]
table | schema_two | schema_two.table_three
type | schema_two | schema_two.table_three
type | schema_two | schema_two.table_three[]
function | schema_two | schema_two.add(integer,integer)
aggregate | schema_two | schema_two.newton(integer)
schema | | schema_one
table | schema_one | schema_one.table_one
type | schema_one | schema_one.table_one
type | schema_one | schema_one.table_one[]
table | schema_one | schema_one."table two"
type | schema_one | schema_one."table two"
type | schema_one | schema_one."table two"[]
table | schema_one | schema_one.table_three
type | schema_one | schema_one.table_three
type | schema_one | schema_one.table_three[]
(23 rows)
DROP OWNED BY regress_evt_user;
NOTICE: schema "audit_tbls" does not exist, skipping
SELECT * FROM dropped_objects WHERE type = 'schema';
type | schema | object
--------+--------+------------
schema | | schema_two
schema | | schema_one
schema | | audit_tbls
(3 rows)
DROP ROLE regress_evt_user;
DROP EVENT TRIGGER regress_event_trigger_drop_objects;
DROP EVENT TRIGGER undroppable;
-- Event triggers on relations.
CREATE OR REPLACE FUNCTION event_trigger_report_dropped()
RETURNS event_trigger
LANGUAGE plpgsql
AS $$
DECLARE r record;
BEGIN
FOR r IN SELECT * from pg_event_trigger_dropped_objects()
LOOP
IF NOT r.normal AND NOT r.original THEN
CONTINUE;
END IF;
RAISE NOTICE 'NORMAL: orig=% normal=% istemp=% type=% identity=% name=% args=%',
r.original, r.normal, r.is_temporary, r.object_type,
r.object_identity, r.address_names, r.address_args;
END LOOP;
END; $$;
CREATE EVENT TRIGGER regress_event_trigger_report_dropped ON sql_drop
EXECUTE PROCEDURE event_trigger_report_dropped();
CREATE OR REPLACE FUNCTION event_trigger_report_end()
RETURNS event_trigger
LANGUAGE plpgsql
AS $$
DECLARE r RECORD;
BEGIN
FOR r IN SELECT * FROM pg_event_trigger_ddl_commands()
LOOP
RAISE NOTICE 'END: command_tag=% type=% identity=%',
r.command_tag, r.object_type, r.object_identity;
END LOOP;
END; $$;
CREATE EVENT TRIGGER regress_event_trigger_report_end ON ddl_command_end
EXECUTE PROCEDURE event_trigger_report_end();
CREATE SCHEMA evttrig
CREATE TABLE one (col_a SERIAL PRIMARY KEY, col_b text DEFAULT 'forty two', col_c SERIAL)
CREATE INDEX one_idx ON one (col_b)
CREATE TABLE two (col_c INTEGER CHECK (col_c > 0) REFERENCES one DEFAULT 42)
CREATE TABLE id (col_d int NOT NULL GENERATED ALWAYS AS IDENTITY);
NOTICE: END: command_tag=CREATE SCHEMA type=schema identity=evttrig
NOTICE: END: command_tag=CREATE SEQUENCE type=sequence identity=evttrig.one_col_a_seq
NOTICE: END: command_tag=CREATE SEQUENCE type=sequence identity=evttrig.one_col_c_seq
NOTICE: END: command_tag=CREATE TABLE type=table identity=evttrig.one
Catalog not-null constraints We now create contype='n' pg_constraint rows for not-null constraints. We propagate these constraints to other tables during operations such as adding inheritance relationships, creating and attaching partitions and creating tables LIKE other tables. We also spawn not-null constraints for inheritance child tables when their parents have primary keys. These related constraints mostly follow the well-known rules of conislocal and coninhcount that we have for CHECK constraints, with some adaptations: for example, as opposed to CHECK constraints, we don't match not-null ones by name when descending a hierarchy to alter it, instead matching by column name that they apply to. This means we don't require the constraint names to be identical across a hierarchy. For now, we omit them for system catalogs. Maybe this is worth reconsidering. We don't support NOT VALID nor DEFERRABLE clauses either; these can be added as separate features later (this patch is already large and complicated enough.) psql shows these constraints in \d+. pg_dump requires some ad-hoc hacks, particularly when dumping a primary key. We now create one "throwaway" not-null constraint for each column in the PK together with the CREATE TABLE command, and once the PK is created, all those throwaway constraints are removed. This avoids having to check each tuple for nullness when the dump restores the primary key creation. pg_upgrading from an older release requires a somewhat brittle procedure to create a constraint state that matches what would be created if the database were being created fresh in Postgres 17. I have tested all the scenarios I could think of, and it works correctly as far as I can tell, but I could have neglected weird cases. This patch has been very long in the making. The first patch was written by Bernd Helmle in 2010 to add a new pg_constraint.contype value ('n'), which I (Álvaro) then hijacked in 2011 and 2012, until that one was killed by the realization that we ought to use contype='c' instead: manufactured CHECK constraints. However, later SQL standard development, as well as nonobvious emergent properties of that design (mostly, failure to distinguish them from "normal" CHECK constraints as well as the performance implication of having to test the CHECK expression) led us to reconsider this choice, so now the current implementation uses contype='n' again. During Postgres 16 this had already been introduced by commit e056c557aef4, but there were some problems mainly with the pg_upgrade procedure that couldn't be fixed in reasonable time, so it was reverted. In 2016 Vitaly Burovoy also worked on this feature[1] but found no consensus for his proposed approach, which was claimed to be closer to the letter of the standard, requiring an additional pg_attribute column to track the OID of the not-null constraint for that column. [1] https://postgr.es/m/CAKOSWNkN6HSyatuys8xZxzRCR-KL1OkHS5-b9qd9bf1Rad3PLA@mail.gmail.com Author: Álvaro Herrera <alvherre@alvh.no-ip.org> Author: Bernd Helmle <mailings@oopsware.de> Reviewed-by: Justin Pryzby <pryzby@telsasoft.com> Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com> Reviewed-by: Dean Rasheed <dean.a.rasheed@gmail.com>
2023-08-25 13:31:24 +02:00
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.one
NOTICE: END: command_tag=CREATE INDEX type=index identity=evttrig.one_pkey
NOTICE: END: command_tag=ALTER SEQUENCE type=sequence identity=evttrig.one_col_a_seq
NOTICE: END: command_tag=ALTER SEQUENCE type=sequence identity=evttrig.one_col_c_seq
NOTICE: END: command_tag=CREATE TABLE type=table identity=evttrig.two
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.two
NOTICE: END: command_tag=CREATE SEQUENCE type=sequence identity=evttrig.id_col_d_seq
NOTICE: END: command_tag=CREATE TABLE type=table identity=evttrig.id
NOTICE: END: command_tag=ALTER SEQUENCE type=sequence identity=evttrig.id_col_d_seq
NOTICE: END: command_tag=CREATE INDEX type=index identity=evttrig.one_idx
-- Partitioned tables with a partitioned index
CREATE TABLE evttrig.parted (
id int PRIMARY KEY)
PARTITION BY RANGE (id);
NOTICE: END: command_tag=CREATE TABLE type=table identity=evttrig.parted
Catalog not-null constraints We now create contype='n' pg_constraint rows for not-null constraints. We propagate these constraints to other tables during operations such as adding inheritance relationships, creating and attaching partitions and creating tables LIKE other tables. We also spawn not-null constraints for inheritance child tables when their parents have primary keys. These related constraints mostly follow the well-known rules of conislocal and coninhcount that we have for CHECK constraints, with some adaptations: for example, as opposed to CHECK constraints, we don't match not-null ones by name when descending a hierarchy to alter it, instead matching by column name that they apply to. This means we don't require the constraint names to be identical across a hierarchy. For now, we omit them for system catalogs. Maybe this is worth reconsidering. We don't support NOT VALID nor DEFERRABLE clauses either; these can be added as separate features later (this patch is already large and complicated enough.) psql shows these constraints in \d+. pg_dump requires some ad-hoc hacks, particularly when dumping a primary key. We now create one "throwaway" not-null constraint for each column in the PK together with the CREATE TABLE command, and once the PK is created, all those throwaway constraints are removed. This avoids having to check each tuple for nullness when the dump restores the primary key creation. pg_upgrading from an older release requires a somewhat brittle procedure to create a constraint state that matches what would be created if the database were being created fresh in Postgres 17. I have tested all the scenarios I could think of, and it works correctly as far as I can tell, but I could have neglected weird cases. This patch has been very long in the making. The first patch was written by Bernd Helmle in 2010 to add a new pg_constraint.contype value ('n'), which I (Álvaro) then hijacked in 2011 and 2012, until that one was killed by the realization that we ought to use contype='c' instead: manufactured CHECK constraints. However, later SQL standard development, as well as nonobvious emergent properties of that design (mostly, failure to distinguish them from "normal" CHECK constraints as well as the performance implication of having to test the CHECK expression) led us to reconsider this choice, so now the current implementation uses contype='n' again. During Postgres 16 this had already been introduced by commit e056c557aef4, but there were some problems mainly with the pg_upgrade procedure that couldn't be fixed in reasonable time, so it was reverted. In 2016 Vitaly Burovoy also worked on this feature[1] but found no consensus for his proposed approach, which was claimed to be closer to the letter of the standard, requiring an additional pg_attribute column to track the OID of the not-null constraint for that column. [1] https://postgr.es/m/CAKOSWNkN6HSyatuys8xZxzRCR-KL1OkHS5-b9qd9bf1Rad3PLA@mail.gmail.com Author: Álvaro Herrera <alvherre@alvh.no-ip.org> Author: Bernd Helmle <mailings@oopsware.de> Reviewed-by: Justin Pryzby <pryzby@telsasoft.com> Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com> Reviewed-by: Dean Rasheed <dean.a.rasheed@gmail.com>
2023-08-25 13:31:24 +02:00
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.parted
NOTICE: END: command_tag=CREATE INDEX type=index identity=evttrig.parted_pkey
CREATE TABLE evttrig.part_1_10 PARTITION OF evttrig.parted (id)
FOR VALUES FROM (1) TO (10);
NOTICE: END: command_tag=CREATE TABLE type=table identity=evttrig.part_1_10
CREATE TABLE evttrig.part_10_20 PARTITION OF evttrig.parted (id)
FOR VALUES FROM (10) TO (20) PARTITION BY RANGE (id);
NOTICE: END: command_tag=CREATE TABLE type=table identity=evttrig.part_10_20
CREATE TABLE evttrig.part_10_15 PARTITION OF evttrig.part_10_20 (id)
FOR VALUES FROM (10) TO (15);
NOTICE: END: command_tag=CREATE TABLE type=table identity=evttrig.part_10_15
CREATE TABLE evttrig.part_15_20 PARTITION OF evttrig.part_10_20 (id)
FOR VALUES FROM (15) TO (20);
NOTICE: END: command_tag=CREATE TABLE type=table identity=evttrig.part_15_20
ALTER TABLE evttrig.two DROP COLUMN col_c;
NOTICE: NORMAL: orig=t normal=f istemp=f type=table column identity=evttrig.two.col_c name={evttrig,two,col_c} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table constraint identity=two_col_c_check on evttrig.two name={evttrig,two,two_col_c_check} args={}
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.two
ALTER TABLE evttrig.one ALTER COLUMN col_b DROP DEFAULT;
NOTICE: NORMAL: orig=t normal=f istemp=f type=default value identity=for evttrig.one.col_b name={evttrig,one,col_b} args={}
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.one
ALTER TABLE evttrig.one DROP CONSTRAINT one_pkey;
NOTICE: NORMAL: orig=t normal=f istemp=f type=table constraint identity=one_pkey on evttrig.one name={evttrig,one,one_pkey} args={}
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.one
ALTER TABLE evttrig.one DROP COLUMN col_c;
NOTICE: NORMAL: orig=t normal=f istemp=f type=table column identity=evttrig.one.col_c name={evttrig,one,col_c} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=default value identity=for evttrig.one.col_c name={evttrig,one,col_c} args={}
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.one
ALTER TABLE evttrig.id ALTER COLUMN col_d SET DATA TYPE bigint;
NOTICE: END: command_tag=ALTER SEQUENCE type=sequence identity=evttrig.id_col_d_seq
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.id
ALTER TABLE evttrig.id ALTER COLUMN col_d DROP IDENTITY,
ALTER COLUMN col_d SET DATA TYPE int;
NOTICE: END: command_tag=ALTER TABLE type=table identity=evttrig.id
DROP INDEX evttrig.one_idx;
NOTICE: NORMAL: orig=t normal=f istemp=f type=index identity=evttrig.one_idx name={evttrig,one_idx} args={}
DROP SCHEMA evttrig CASCADE;
NOTICE: drop cascades to 4 other objects
DETAIL: drop cascades to table evttrig.one
drop cascades to table evttrig.two
drop cascades to table evttrig.id
drop cascades to table evttrig.parted
NOTICE: NORMAL: orig=t normal=f istemp=f type=schema identity=evttrig name={evttrig} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table identity=evttrig.one name={evttrig,one} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=sequence identity=evttrig.one_col_a_seq name={evttrig,one_col_a_seq} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=default value identity=for evttrig.one.col_a name={evttrig,one,col_a} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table identity=evttrig.two name={evttrig,two} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table identity=evttrig.id name={evttrig,id} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table identity=evttrig.parted name={evttrig,parted} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table identity=evttrig.part_1_10 name={evttrig,part_1_10} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table identity=evttrig.part_10_20 name={evttrig,part_10_20} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table identity=evttrig.part_10_15 name={evttrig,part_10_15} args={}
NOTICE: NORMAL: orig=f normal=t istemp=f type=table identity=evttrig.part_15_20 name={evttrig,part_15_20} args={}
DROP TABLE a_temp_tbl;
NOTICE: NORMAL: orig=t normal=f istemp=t type=table identity=pg_temp.a_temp_tbl name={pg_temp,a_temp_tbl} args={}
-- CREATE OPERATOR CLASS without FAMILY clause should report
-- both CREATE OPERATOR FAMILY and CREATE OPERATOR CLASS
CREATE OPERATOR CLASS evttrigopclass FOR TYPE int USING btree AS STORAGE int;
NOTICE: END: command_tag=CREATE OPERATOR FAMILY type=operator family identity=public.evttrigopclass USING btree
NOTICE: END: command_tag=CREATE OPERATOR CLASS type=operator class identity=public.evttrigopclass USING btree
DROP EVENT TRIGGER regress_event_trigger_report_dropped;
DROP EVENT TRIGGER regress_event_trigger_report_end;
-- only allowed from within an event trigger function, should fail
select pg_event_trigger_table_rewrite_oid();
ERROR: pg_event_trigger_table_rewrite_oid() can only be called in a table_rewrite event trigger function
-- test Table Rewrite Event Trigger
CREATE OR REPLACE FUNCTION test_evtrig_no_rewrite() RETURNS event_trigger
LANGUAGE plpgsql AS $$
BEGIN
RAISE EXCEPTION 'rewrites not allowed';
END;
$$;
create event trigger no_rewrite_allowed on table_rewrite
execute procedure test_evtrig_no_rewrite();
create table rewriteme (id serial primary key, foo float, bar timestamptz);
insert into rewriteme
select x * 1.001 from generate_series(1, 500) as t(x);
alter table rewriteme alter column foo type numeric;
ERROR: rewrites not allowed
CONTEXT: PL/pgSQL function test_evtrig_no_rewrite() line 3 at RAISE
alter table rewriteme add column baz int default 0;
-- test with more than one reason to rewrite a single table
CREATE OR REPLACE FUNCTION test_evtrig_no_rewrite() RETURNS event_trigger
LANGUAGE plpgsql AS $$
BEGIN
RAISE NOTICE 'Table ''%'' is being rewritten (reason = %)',
pg_event_trigger_table_rewrite_oid()::regclass,
pg_event_trigger_table_rewrite_reason();
END;
$$;
alter table rewriteme
add column onemore int default 0,
add column another int default -1,
alter column foo type numeric(10,4);
NOTICE: Table 'rewriteme' is being rewritten (reason = 4)
-- matview rewrite when changing access method
CREATE MATERIALIZED VIEW heapmv USING heap AS SELECT 1 AS a;
ALTER MATERIALIZED VIEW heapmv SET ACCESS METHOD heap2;
NOTICE: Table 'heapmv' is being rewritten (reason = 8)
DROP MATERIALIZED VIEW heapmv;
-- shouldn't trigger a table_rewrite event
alter table rewriteme alter column foo type numeric(12,4);
begin;
set timezone to 'UTC';
alter table rewriteme alter column bar type timestamp;
set timezone to '0';
alter table rewriteme alter column bar type timestamptz;
set timezone to 'Europe/London';
alter table rewriteme alter column bar type timestamp; -- does rewrite
NOTICE: Table 'rewriteme' is being rewritten (reason = 4)
rollback;
-- typed tables are rewritten when their type changes. Don't emit table
-- name, because firing order is not stable.
CREATE OR REPLACE FUNCTION test_evtrig_no_rewrite() RETURNS event_trigger
LANGUAGE plpgsql AS $$
BEGIN
RAISE NOTICE 'Table is being rewritten (reason = %)',
pg_event_trigger_table_rewrite_reason();
END;
$$;
create type rewritetype as (a int);
create table rewritemetoo1 of rewritetype;
create table rewritemetoo2 of rewritetype;
alter type rewritetype alter attribute a type text cascade;
NOTICE: Table is being rewritten (reason = 4)
NOTICE: Table is being rewritten (reason = 4)
-- but this doesn't work
create table rewritemetoo3 (a rewritetype);
alter type rewritetype alter attribute a type varchar cascade;
ERROR: cannot alter type "rewritetype" because column "rewritemetoo3.a" uses it
drop table rewriteme;
drop event trigger no_rewrite_allowed;
drop function test_evtrig_no_rewrite();
-- Tests for REINDEX
CREATE OR REPLACE FUNCTION reindex_start_command()
RETURNS event_trigger AS $$
BEGIN
RAISE NOTICE 'REINDEX START: % %', tg_event, tg_tag;
END;
$$ LANGUAGE plpgsql;
CREATE EVENT TRIGGER regress_reindex_start ON ddl_command_start
WHEN TAG IN ('REINDEX')
EXECUTE PROCEDURE reindex_start_command();
CREATE FUNCTION reindex_end_command()
RETURNS event_trigger AS $$
DECLARE
obj record;
BEGIN
FOR obj IN SELECT * FROM pg_event_trigger_ddl_commands()
LOOP
RAISE NOTICE 'REINDEX END: command_tag=% type=% identity=%',
obj.command_tag, obj.object_type, obj.object_identity;
END LOOP;
END;
$$ LANGUAGE plpgsql;
CREATE EVENT TRIGGER regress_reindex_end ON ddl_command_end
WHEN TAG IN ('REINDEX')
EXECUTE PROCEDURE reindex_end_command();
-- Extra event to force the use of a snapshot.
CREATE FUNCTION reindex_end_command_snap() RETURNS EVENT_TRIGGER
AS $$ BEGIN PERFORM 1; END $$ LANGUAGE plpgsql;
CREATE EVENT TRIGGER regress_reindex_end_snap ON ddl_command_end
EXECUTE FUNCTION reindex_end_command_snap();
-- With simple relation
CREATE TABLE concur_reindex_tab (c1 int);
CREATE INDEX concur_reindex_ind ON concur_reindex_tab (c1);
-- Both start and end triggers enabled.
REINDEX INDEX concur_reindex_ind;
NOTICE: REINDEX START: ddl_command_start REINDEX
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_ind
REINDEX TABLE concur_reindex_tab;
NOTICE: REINDEX START: ddl_command_start REINDEX
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_ind
REINDEX INDEX CONCURRENTLY concur_reindex_ind;
NOTICE: REINDEX START: ddl_command_start REINDEX
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_ind
REINDEX TABLE CONCURRENTLY concur_reindex_tab;
NOTICE: REINDEX START: ddl_command_start REINDEX
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_ind
-- with start trigger disabled.
ALTER EVENT TRIGGER regress_reindex_start DISABLE;
REINDEX INDEX concur_reindex_ind;
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_ind
REINDEX INDEX CONCURRENTLY concur_reindex_ind;
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_ind
-- without an index
DROP INDEX concur_reindex_ind;
REINDEX TABLE concur_reindex_tab;
NOTICE: table "concur_reindex_tab" has no indexes to reindex
REINDEX TABLE CONCURRENTLY concur_reindex_tab;
NOTICE: table "concur_reindex_tab" has no indexes that can be reindexed concurrently
-- With a Schema
CREATE SCHEMA concur_reindex_schema;
-- No indexes
REINDEX SCHEMA concur_reindex_schema;
REINDEX SCHEMA CONCURRENTLY concur_reindex_schema;
CREATE TABLE concur_reindex_schema.tab (a int);
CREATE INDEX ind ON concur_reindex_schema.tab (a);
-- One index reported
REINDEX SCHEMA concur_reindex_schema;
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=concur_reindex_schema.ind
REINDEX SCHEMA CONCURRENTLY concur_reindex_schema;
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=concur_reindex_schema.ind
-- One table on schema but no indexes
DROP INDEX concur_reindex_schema.ind;
REINDEX SCHEMA concur_reindex_schema;
REINDEX SCHEMA CONCURRENTLY concur_reindex_schema;
DROP SCHEMA concur_reindex_schema CASCADE;
NOTICE: drop cascades to table concur_reindex_schema.tab
-- With a partitioned table, and nothing else.
CREATE TABLE concur_reindex_part (id int) PARTITION BY RANGE (id);
REINDEX TABLE concur_reindex_part;
REINDEX TABLE CONCURRENTLY concur_reindex_part;
-- Partition that would be reindexed, still nothing.
CREATE TABLE concur_reindex_child PARTITION OF concur_reindex_part
FOR VALUES FROM (0) TO (10);
REINDEX TABLE concur_reindex_part;
REINDEX TABLE CONCURRENTLY concur_reindex_part;
-- Now add some indexes.
CREATE INDEX concur_reindex_partidx ON concur_reindex_part (id);
REINDEX INDEX concur_reindex_partidx;
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_child_id_idx
REINDEX INDEX CONCURRENTLY concur_reindex_partidx;
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_child_id_idx
REINDEX TABLE concur_reindex_part;
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_child_id_idx
REINDEX TABLE CONCURRENTLY concur_reindex_part;
NOTICE: REINDEX END: command_tag=REINDEX type=index identity=public.concur_reindex_child_id_idx
DROP TABLE concur_reindex_part;
-- Clean up
DROP EVENT TRIGGER regress_reindex_start;
DROP EVENT TRIGGER regress_reindex_end;
DROP EVENT TRIGGER regress_reindex_end_snap;
DROP FUNCTION reindex_end_command();
DROP FUNCTION reindex_end_command_snap();
DROP FUNCTION reindex_start_command();
DROP TABLE concur_reindex_tab;
-- test Row Security Event Trigger
RESET SESSION AUTHORIZATION;
CREATE TABLE event_trigger_test (a integer, b text);
CREATE OR REPLACE FUNCTION start_command()
RETURNS event_trigger AS $$
BEGIN
RAISE NOTICE '% - ddl_command_start', tg_tag;
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION end_command()
RETURNS event_trigger AS $$
BEGIN
RAISE NOTICE '% - ddl_command_end', tg_tag;
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION drop_sql_command()
RETURNS event_trigger AS $$
BEGIN
RAISE NOTICE '% - sql_drop', tg_tag;
END;
$$ LANGUAGE plpgsql;
CREATE EVENT TRIGGER start_rls_command ON ddl_command_start
WHEN TAG IN ('CREATE POLICY', 'ALTER POLICY', 'DROP POLICY') EXECUTE PROCEDURE start_command();
CREATE EVENT TRIGGER end_rls_command ON ddl_command_end
WHEN TAG IN ('CREATE POLICY', 'ALTER POLICY', 'DROP POLICY') EXECUTE PROCEDURE end_command();
CREATE EVENT TRIGGER sql_drop_command ON sql_drop
WHEN TAG IN ('DROP POLICY') EXECUTE PROCEDURE drop_sql_command();
CREATE POLICY p1 ON event_trigger_test USING (FALSE);
NOTICE: CREATE POLICY - ddl_command_start
NOTICE: CREATE POLICY - ddl_command_end
ALTER POLICY p1 ON event_trigger_test USING (TRUE);
NOTICE: ALTER POLICY - ddl_command_start
NOTICE: ALTER POLICY - ddl_command_end
ALTER POLICY p1 ON event_trigger_test RENAME TO p2;
NOTICE: ALTER POLICY - ddl_command_start
NOTICE: ALTER POLICY - ddl_command_end
DROP POLICY p2 ON event_trigger_test;
NOTICE: DROP POLICY - ddl_command_start
NOTICE: DROP POLICY - sql_drop
NOTICE: DROP POLICY - ddl_command_end
-- Check the object addresses of all the event triggers.
SELECT
e.evtname,
pg_describe_object('pg_event_trigger'::regclass, e.oid, 0) as descr,
b.type, b.object_names, b.object_args,
pg_identify_object(a.classid, a.objid, a.objsubid) as ident
FROM pg_event_trigger as e,
LATERAL pg_identify_object_as_address('pg_event_trigger'::regclass, e.oid, 0) as b,
LATERAL pg_get_object_address(b.type, b.object_names, b.object_args) as a
ORDER BY e.evtname;
evtname | descr | type | object_names | object_args | ident
-------------------+---------------------------------+---------------+---------------------+-------------+--------------------------------------------------------
end_rls_command | event trigger end_rls_command | event trigger | {end_rls_command} | {} | ("event trigger",,end_rls_command,end_rls_command)
sql_drop_command | event trigger sql_drop_command | event trigger | {sql_drop_command} | {} | ("event trigger",,sql_drop_command,sql_drop_command)
start_rls_command | event trigger start_rls_command | event trigger | {start_rls_command} | {} | ("event trigger",,start_rls_command,start_rls_command)
(3 rows)
DROP EVENT TRIGGER start_rls_command;
DROP EVENT TRIGGER end_rls_command;
DROP EVENT TRIGGER sql_drop_command;
-- Check the GUC for disabling event triggers
CREATE FUNCTION test_event_trigger_guc() RETURNS event_trigger
LANGUAGE plpgsql AS $$
DECLARE
obj record;
BEGIN
FOR obj IN SELECT * FROM pg_event_trigger_dropped_objects()
LOOP
RAISE NOTICE '% dropped %', tg_tag, obj.object_type;
END LOOP;
END;
$$;
CREATE EVENT TRIGGER test_event_trigger_guc
ON sql_drop
WHEN TAG IN ('DROP POLICY') EXECUTE FUNCTION test_event_trigger_guc();
SET event_triggers = 'on';
CREATE POLICY pguc ON event_trigger_test USING (FALSE);
DROP POLICY pguc ON event_trigger_test;
NOTICE: DROP POLICY dropped policy
CREATE POLICY pguc ON event_trigger_test USING (FALSE);
SET event_triggers = 'off';
DROP POLICY pguc ON event_trigger_test;