--
-- TEMP
-- Test temp relations and indexes
--
-- test temp table/index masking
CREATE TABLE temptest(col int);
CREATE INDEX i_temptest ON temptest(col);
CREATE TEMP TABLE temptest(tcol int);
CREATE INDEX i_temptest ON temptest(tcol);
SELECT * FROM temptest;
 tcol 
------
(0 rows)

DROP INDEX i_temptest;
DROP TABLE temptest;
SELECT * FROM temptest;
 col 
-----
(0 rows)

DROP INDEX i_temptest;
DROP TABLE temptest;
-- test temp table selects
CREATE TABLE temptest(col int);
INSERT INTO temptest VALUES (1);
CREATE TEMP TABLE temptest(tcol float);
INSERT INTO temptest VALUES (2.1);
SELECT * FROM temptest;
 tcol 
------
  2.1
(1 row)

DROP TABLE temptest;
SELECT * FROM temptest;
 col 
-----
   1
(1 row)

DROP TABLE temptest;
-- test temp table deletion
CREATE TEMP TABLE temptest(col int);
\c
SELECT * FROM temptest;
ERROR:  relation "temptest" does not exist
LINE 1: SELECT * FROM temptest;
                      ^
-- Test ON COMMIT DELETE ROWS
CREATE TEMP TABLE temptest(col int) ON COMMIT DELETE ROWS;
-- while we're here, verify successful truncation of index with SQL function
CREATE INDEX ON temptest(bit_length(''));
BEGIN;
INSERT INTO temptest VALUES (1);
INSERT INTO temptest VALUES (2);
SELECT * FROM temptest;
 col 
-----
   1
   2
(2 rows)

COMMIT;
SELECT * FROM temptest;
 col 
-----
(0 rows)

DROP TABLE temptest;
BEGIN;
CREATE TEMP TABLE temptest(col) ON COMMIT DELETE ROWS AS SELECT 1;
SELECT * FROM temptest;
 col 
-----
   1
(1 row)

COMMIT;
SELECT * FROM temptest;
 col 
-----
(0 rows)

DROP TABLE temptest;
-- Test ON COMMIT DROP
BEGIN;
CREATE TEMP TABLE temptest(col int) ON COMMIT DROP;
INSERT INTO temptest VALUES (1);
INSERT INTO temptest VALUES (2);
SELECT * FROM temptest;
 col 
-----
   1
   2
(2 rows)

COMMIT;
SELECT * FROM temptest;
ERROR:  relation "temptest" does not exist
LINE 1: SELECT * FROM temptest;
                      ^
BEGIN;
CREATE TEMP TABLE temptest(col) ON COMMIT DROP AS SELECT 1;
SELECT * FROM temptest;
 col 
-----
   1
(1 row)

COMMIT;
SELECT * FROM temptest;
ERROR:  relation "temptest" does not exist
LINE 1: SELECT * FROM temptest;
                      ^
-- ON COMMIT is only allowed for TEMP
CREATE TABLE temptest(col int) ON COMMIT DELETE ROWS;
ERROR:  ON COMMIT can only be used on temporary tables
CREATE TABLE temptest(col) ON COMMIT DELETE ROWS AS SELECT 1;
ERROR:  ON COMMIT can only be used on temporary tables
-- Test foreign keys
BEGIN;
CREATE TEMP TABLE temptest1(col int PRIMARY KEY);
CREATE TEMP TABLE temptest2(col int REFERENCES temptest1)
  ON COMMIT DELETE ROWS;
INSERT INTO temptest1 VALUES (1);
INSERT INTO temptest2 VALUES (1);
COMMIT;
SELECT * FROM temptest1;
 col 
-----
   1
(1 row)

SELECT * FROM temptest2;
 col 
-----
(0 rows)

BEGIN;
CREATE TEMP TABLE temptest3(col int PRIMARY KEY) ON COMMIT DELETE ROWS;
CREATE TEMP TABLE temptest4(col int REFERENCES temptest3);
COMMIT;
ERROR:  unsupported ON COMMIT and foreign key combination
DETAIL:  Table "temptest4" references "temptest3", but they do not have the same ON COMMIT setting.
-- Test manipulation of temp schema's placement in search path
create table public.whereami (f1 text);
insert into public.whereami values ('public');
create temp table whereami (f1 text);
insert into whereami values ('temp');
create function public.whoami() returns text
  as $$select 'public'::text$$ language sql;
create function pg_temp.whoami() returns text
  as $$select 'temp'::text$$ language sql;
-- default should have pg_temp implicitly first, but only for tables
select * from whereami;
  f1  
------
 temp
(1 row)

select whoami();
 whoami 
--------
 public
(1 row)

-- can list temp first explicitly, but it still doesn't affect functions
set search_path = pg_temp, public;
select * from whereami;
  f1  
------
 temp
(1 row)

select whoami();
 whoami 
--------
 public
(1 row)

-- or put it last for security
set search_path = public, pg_temp;
select * from whereami;
   f1   
--------
 public
(1 row)

select whoami();
 whoami 
--------
 public
(1 row)

-- you can invoke a temp function explicitly, though
select pg_temp.whoami();
 whoami 
--------
 temp
(1 row)

drop table public.whereami;
-- types in temp schema
set search_path = pg_temp, public;
create domain pg_temp.nonempty as text check (value <> '');
-- function-syntax invocation of types matches rules for functions
select nonempty('');
ERROR:  function nonempty(unknown) does not exist
LINE 1: select nonempty('');
               ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.
select pg_temp.nonempty('');
ERROR:  value for domain nonempty violates check constraint "nonempty_check"
-- other syntax matches rules for tables
select ''::nonempty;
ERROR:  value for domain nonempty violates check constraint "nonempty_check"
reset search_path;
-- For partitioned temp tables, ON COMMIT actions ignore storage-less
-- partitioned tables.
begin;
create temp table temp_parted_oncommit (a int)
  partition by list (a) on commit delete rows;
create temp table temp_parted_oncommit_1
  partition of temp_parted_oncommit
  for values in (1) on commit delete rows;
insert into temp_parted_oncommit values (1);
commit;
-- partitions are emptied by the previous commit
select * from temp_parted_oncommit;
 a 
---
(0 rows)

drop table temp_parted_oncommit;
-- Check dependencies between ON COMMIT actions with a partitioned
-- table and its partitions.  Using ON COMMIT DROP on a parent removes
-- the whole set.
begin;
create temp table temp_parted_oncommit_test (a int)
  partition by list (a) on commit drop;
create temp table temp_parted_oncommit_test1
  partition of temp_parted_oncommit_test
  for values in (1) on commit delete rows;
create temp table temp_parted_oncommit_test2
  partition of temp_parted_oncommit_test
  for values in (2) on commit drop;
insert into temp_parted_oncommit_test values (1), (2);
commit;
-- no relations remain in this case.
select relname from pg_class where relname ~ '^temp_parted_oncommit_test';
 relname 
---------
(0 rows)

-- Using ON COMMIT DELETE on a partitioned table does not remove
-- all rows if partitions preserve their data.
begin;
create temp table temp_parted_oncommit_test (a int)
  partition by list (a) on commit delete rows;
create temp table temp_parted_oncommit_test1
  partition of temp_parted_oncommit_test
  for values in (1) on commit preserve rows;
create temp table temp_parted_oncommit_test2
  partition of temp_parted_oncommit_test
  for values in (2) on commit drop;
insert into temp_parted_oncommit_test values (1), (2);
commit;
-- Data from the remaining partition is still here as its rows are
-- preserved.
select * from temp_parted_oncommit_test;
 a 
---
 1
(1 row)

-- two relations remain in this case.
select relname from pg_class where relname ~ '^temp_parted_oncommit_test'
  order by relname;
          relname           
----------------------------
 temp_parted_oncommit_test
 temp_parted_oncommit_test1
(2 rows)

drop table temp_parted_oncommit_test;
-- Check dependencies between ON COMMIT actions with inheritance trees.
-- Using ON COMMIT DROP on a parent removes the whole set.
begin;
create temp table temp_inh_oncommit_test (a int) on commit drop;
create temp table temp_inh_oncommit_test1 ()
  inherits(temp_inh_oncommit_test) on commit delete rows;
insert into temp_inh_oncommit_test1 values (1);
commit;
-- no relations remain in this case
select relname from pg_class where relname ~ '^temp_inh_oncommit_test';
 relname 
---------
(0 rows)

-- Data on the parent is removed, and the child goes away.
begin;
create temp table temp_inh_oncommit_test (a int) on commit delete rows;
create temp table temp_inh_oncommit_test1 ()
  inherits(temp_inh_oncommit_test) on commit drop;
insert into temp_inh_oncommit_test1 values (1);
insert into temp_inh_oncommit_test values (1);
commit;
select * from temp_inh_oncommit_test;
 a 
---
(0 rows)

-- one relation remains
select relname from pg_class where relname ~ '^temp_inh_oncommit_test';
        relname         
------------------------
 temp_inh_oncommit_test
(1 row)

drop table temp_inh_oncommit_test;
-- Tests with two-phase commit
-- Transactions creating objects in a temporary namespace cannot be used
-- with two-phase commit.
-- These cases generate errors about temporary namespace.
-- Function creation
begin;
create function pg_temp.twophase_func() returns void as
  $$ select '2pc_func'::text $$ language sql;
prepare transaction 'twophase_func';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
-- Function drop
create function pg_temp.twophase_func() returns void as
  $$ select '2pc_func'::text $$ language sql;
begin;
drop function pg_temp.twophase_func();
prepare transaction 'twophase_func';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
-- Operator creation
begin;
create operator pg_temp.@@ (leftarg = int4, rightarg = int4, procedure = int4mi);
prepare transaction 'twophase_operator';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
-- These generate errors about temporary tables.
begin;
create type pg_temp.twophase_type as (a int);
prepare transaction 'twophase_type';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
begin;
create view pg_temp.twophase_view as select 1;
prepare transaction 'twophase_view';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
begin;
create sequence pg_temp.twophase_seq;
prepare transaction 'twophase_sequence';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
-- Temporary tables cannot be used with two-phase commit.
create temp table twophase_tab (a int);
begin;
select a from twophase_tab;
 a 
---
(0 rows)

prepare transaction 'twophase_tab';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
begin;
insert into twophase_tab values (1);
prepare transaction 'twophase_tab';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
begin;
lock twophase_tab in access exclusive mode;
prepare transaction 'twophase_tab';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
begin;
drop table twophase_tab;
prepare transaction 'twophase_tab';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects
-- Corner case: current_schema may create a temporary schema if namespace
-- creation is pending, so check after that.  First reset the connection
-- to remove the temporary namespace.
\c -
SET search_path TO 'pg_temp';
BEGIN;
SELECT current_schema() ~ 'pg_temp' AS is_temp_schema;
 is_temp_schema 
----------------
 t
(1 row)

PREPARE TRANSACTION 'twophase_search';
ERROR:  cannot PREPARE a transaction that has operated on temporary objects