294 lines
7.8 KiB
PL/PgSQL
294 lines
7.8 KiB
PL/PgSQL
--
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-- TEMP
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-- Test temp relations and indexes
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--
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-- test temp table/index masking
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CREATE TABLE temptest(col int);
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CREATE INDEX i_temptest ON temptest(col);
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CREATE TEMP TABLE temptest(tcol int);
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CREATE INDEX i_temptest ON temptest(tcol);
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SELECT * FROM temptest;
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DROP INDEX i_temptest;
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DROP TABLE temptest;
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SELECT * FROM temptest;
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DROP INDEX i_temptest;
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DROP TABLE temptest;
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-- test temp table selects
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CREATE TABLE temptest(col int);
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INSERT INTO temptest VALUES (1);
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CREATE TEMP TABLE temptest(tcol float);
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INSERT INTO temptest VALUES (2.1);
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SELECT * FROM temptest;
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DROP TABLE temptest;
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SELECT * FROM temptest;
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DROP TABLE temptest;
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-- test temp table deletion
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CREATE TEMP TABLE temptest(col int);
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\c
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SELECT * FROM temptest;
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-- Test ON COMMIT DELETE ROWS
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CREATE TEMP TABLE temptest(col int) ON COMMIT DELETE ROWS;
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BEGIN;
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INSERT INTO temptest VALUES (1);
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INSERT INTO temptest VALUES (2);
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SELECT * FROM temptest;
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COMMIT;
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SELECT * FROM temptest;
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DROP TABLE temptest;
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BEGIN;
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CREATE TEMP TABLE temptest(col) ON COMMIT DELETE ROWS AS SELECT 1;
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SELECT * FROM temptest;
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COMMIT;
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SELECT * FROM temptest;
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DROP TABLE temptest;
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-- Test ON COMMIT DROP
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BEGIN;
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CREATE TEMP TABLE temptest(col int) ON COMMIT DROP;
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INSERT INTO temptest VALUES (1);
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INSERT INTO temptest VALUES (2);
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SELECT * FROM temptest;
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COMMIT;
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SELECT * FROM temptest;
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BEGIN;
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CREATE TEMP TABLE temptest(col) ON COMMIT DROP AS SELECT 1;
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SELECT * FROM temptest;
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COMMIT;
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SELECT * FROM temptest;
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-- ON COMMIT is only allowed for TEMP
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CREATE TABLE temptest(col int) ON COMMIT DELETE ROWS;
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CREATE TABLE temptest(col) ON COMMIT DELETE ROWS AS SELECT 1;
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-- Test foreign keys
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BEGIN;
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CREATE TEMP TABLE temptest1(col int PRIMARY KEY);
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CREATE TEMP TABLE temptest2(col int REFERENCES temptest1)
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ON COMMIT DELETE ROWS;
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INSERT INTO temptest1 VALUES (1);
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INSERT INTO temptest2 VALUES (1);
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COMMIT;
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SELECT * FROM temptest1;
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SELECT * FROM temptest2;
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BEGIN;
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CREATE TEMP TABLE temptest3(col int PRIMARY KEY) ON COMMIT DELETE ROWS;
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CREATE TEMP TABLE temptest4(col int REFERENCES temptest3);
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COMMIT;
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-- Test manipulation of temp schema's placement in search path
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create table public.whereami (f1 text);
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insert into public.whereami values ('public');
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create temp table whereami (f1 text);
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insert into whereami values ('temp');
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create function public.whoami() returns text
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as $$select 'public'::text$$ language sql;
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create function pg_temp.whoami() returns text
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as $$select 'temp'::text$$ language sql;
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-- default should have pg_temp implicitly first, but only for tables
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select * from whereami;
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select whoami();
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-- can list temp first explicitly, but it still doesn't affect functions
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set search_path = pg_temp, public;
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select * from whereami;
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select whoami();
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-- or put it last for security
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set search_path = public, pg_temp;
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select * from whereami;
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select whoami();
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-- you can invoke a temp function explicitly, though
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select pg_temp.whoami();
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drop table public.whereami;
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-- types in temp schema
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set search_path = pg_temp, public;
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create domain pg_temp.nonempty as text check (value <> '');
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-- function-syntax invocation of types matches rules for functions
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select nonempty('');
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select pg_temp.nonempty('');
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-- other syntax matches rules for tables
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select ''::nonempty;
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reset search_path;
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-- For partitioned temp tables, ON COMMIT actions ignore storage-less
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-- partitioned tables.
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begin;
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create temp table temp_parted_oncommit (a int)
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partition by list (a) on commit delete rows;
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create temp table temp_parted_oncommit_1
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partition of temp_parted_oncommit
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for values in (1) on commit delete rows;
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insert into temp_parted_oncommit values (1);
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commit;
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-- partitions are emptied by the previous commit
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select * from temp_parted_oncommit;
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drop table temp_parted_oncommit;
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-- Check dependencies between ON COMMIT actions with a partitioned
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-- table and its partitions. Using ON COMMIT DROP on a parent removes
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-- the whole set.
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begin;
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create temp table temp_parted_oncommit_test (a int)
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partition by list (a) on commit drop;
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create temp table temp_parted_oncommit_test1
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partition of temp_parted_oncommit_test
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for values in (1) on commit delete rows;
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create temp table temp_parted_oncommit_test2
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partition of temp_parted_oncommit_test
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for values in (2) on commit drop;
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insert into temp_parted_oncommit_test values (1), (2);
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commit;
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-- no relations remain in this case.
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select relname from pg_class where relname like 'temp_parted_oncommit_test%';
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-- Using ON COMMIT DELETE on a partitioned table does not remove
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-- all rows if partitions preserve their data.
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begin;
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create temp table temp_parted_oncommit_test (a int)
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partition by list (a) on commit delete rows;
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create temp table temp_parted_oncommit_test1
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partition of temp_parted_oncommit_test
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for values in (1) on commit preserve rows;
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create temp table temp_parted_oncommit_test2
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partition of temp_parted_oncommit_test
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for values in (2) on commit drop;
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insert into temp_parted_oncommit_test values (1), (2);
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commit;
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-- Data from the remaining partition is still here as its rows are
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-- preserved.
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select * from temp_parted_oncommit_test;
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-- two relations remain in this case.
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select relname from pg_class where relname like 'temp_parted_oncommit_test%';
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drop table temp_parted_oncommit_test;
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-- Check dependencies between ON COMMIT actions with inheritance trees.
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-- Using ON COMMIT DROP on a parent removes the whole set.
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begin;
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create temp table temp_inh_oncommit_test (a int) on commit drop;
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create temp table temp_inh_oncommit_test1 ()
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inherits(temp_inh_oncommit_test) on commit delete rows;
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insert into temp_inh_oncommit_test1 values (1);
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commit;
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-- no relations remain in this case
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select relname from pg_class where relname like 'temp_inh_oncommit_test%';
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-- Data on the parent is removed, and the child goes away.
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begin;
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create temp table temp_inh_oncommit_test (a int) on commit delete rows;
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create temp table temp_inh_oncommit_test1 ()
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inherits(temp_inh_oncommit_test) on commit drop;
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insert into temp_inh_oncommit_test1 values (1);
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insert into temp_inh_oncommit_test values (1);
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commit;
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select * from temp_inh_oncommit_test;
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-- one relation remains
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select relname from pg_class where relname like 'temp_inh_oncommit_test%';
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drop table temp_inh_oncommit_test;
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-- Tests with two-phase commit
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-- Transactions creating objects in a temporary namespace cannot be used
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-- with two-phase commit.
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-- These cases generate errors about temporary namespace.
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-- Function creation
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begin;
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create function pg_temp.twophase_func() returns void as
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$$ select '2pc_func'::text $$ language sql;
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prepare transaction 'twophase_func';
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-- Function drop
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create function pg_temp.twophase_func() returns void as
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$$ select '2pc_func'::text $$ language sql;
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begin;
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drop function pg_temp.twophase_func();
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prepare transaction 'twophase_func';
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-- Operator creation
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begin;
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create operator pg_temp.@@ (leftarg = int4, rightarg = int4, procedure = int4mi);
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prepare transaction 'twophase_operator';
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-- These generate errors about temporary tables.
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begin;
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create type pg_temp.twophase_type as (a int);
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prepare transaction 'twophase_type';
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begin;
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create view pg_temp.twophase_view as select 1;
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prepare transaction 'twophase_view';
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begin;
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create sequence pg_temp.twophase_seq;
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prepare transaction 'twophase_sequence';
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-- Temporary tables cannot be used with two-phase commit.
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create temp table twophase_tab (a int);
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begin;
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select a from twophase_tab;
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prepare transaction 'twophase_tab';
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begin;
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insert into twophase_tab values (1);
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prepare transaction 'twophase_tab';
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begin;
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lock twophase_tab in access exclusive mode;
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prepare transaction 'twophase_tab';
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begin;
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drop table twophase_tab;
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prepare transaction 'twophase_tab';
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-- Corner case: current_schema may create a temporary schema if namespace
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-- creation is pending, so check after that. First reset the connection
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-- to remove the temporary namespace.
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\c -
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SET search_path TO 'pg_temp';
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BEGIN;
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SELECT current_schema() ~ 'pg_temp' AS is_temp_schema;
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PREPARE TRANSACTION 'twophase_search';
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