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rzharkovrzharkov
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[test] Test for global temp tables
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‎src/test/regress/expected/global_temp.out

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--
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-- GLOBAL TEMP
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-- Test global temp relations
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--
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-- Test ON COMMIT DELETE ROWS
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CREATE GLOBAL 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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col
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-----
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1
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2
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(2 rows)
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COMMIT;
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SELECT * FROM temptest;
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col
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-----
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(0 rows)
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DROP TABLE temptest;
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BEGIN;
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CREATE GLOBAL TEMP TABLE temptest(col) ON COMMIT DELETE ROWS AS SELECT 1;
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SELECT * FROM temptest;
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col
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-----
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1
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(1 row)
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COMMIT;
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SELECT * FROM temptest;
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col
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-----
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(0 rows)
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DROP TABLE temptest;
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-- Test foreign keys
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BEGIN;
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CREATE GLOBAL TEMP TABLE temptest1(col int PRIMARY KEY);
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CREATE GLOBAL 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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col
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-----
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1
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(1 row)
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SELECT * FROM temptest2;
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col
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-----
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(0 rows)
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BEGIN;
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CREATE GLOBAL TEMP TABLE temptest3(col int PRIMARY KEY) ON COMMIT DELETE ROWS;
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CREATE GLOBAL TEMP TABLE temptest4(col int REFERENCES temptest3);
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COMMIT;
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ERROR: unsupported ON COMMIT and foreign key combination
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DETAIL: Table "temptest4" references "temptest3", but they do not have the same ON COMMIT setting.
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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 GLOBAL TEMP TABLE temp_parted_oncommit (a int)
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partition by list (a) on commit delete rows;
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CREATE GLOBAL 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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a
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---
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(0 rows)
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drop table temp_parted_oncommit;
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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 GLOBAL 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 GLOBAL 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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insert into temp_parted_oncommit_test values (1);
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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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a
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---
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1
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(1 row)
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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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relname
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----------------------------
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temp_parted_oncommit_test
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temp_parted_oncommit_test1
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(2 rows)
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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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-- Data on the parent is removed, and the child goes away.
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begin;
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CREATE GLOBAL TEMP TABLE temp_inh_oncommit_test (a int) on commit delete rows;
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CREATE GLOBAL TEMP TABLE temp_inh_oncommit_test1 ()
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inherits(temp_inh_oncommit_test) on commit preserve rows;
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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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a
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---
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1
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(1 row)
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-- two relations remain
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select relname from pg_class where relname like 'temp_inh_oncommit_test%';
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relname
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-------------------------
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temp_inh_oncommit_test
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temp_inh_oncommit_test1
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(2 rows)
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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-- Temporary tables cannot be used with two-phase commit.
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CREATE GLOBAL TEMP TABLE twophase_tab (a int);
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begin;
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select a from twophase_tab;
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a
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---
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(0 rows)
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prepare transaction 'twophase_tab';
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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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ERROR: cannot PREPARE a transaction that has operated on temporary objects
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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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is_temp_schema
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----------------
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t
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(1 row)
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PREPARE TRANSACTION 'twophase_search';
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ERROR: cannot PREPARE a transaction that has operated on temporary objects

‎src/test/regress/sql/global_temp.sql

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--
2+
-- GLOBAL TEMP
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-- Test global temp relations
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--
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6+
-- Test ON COMMIT DELETE ROWS
7+
8+
CREATE GLOBAL TEMP TABLE temptest(col int) ON COMMIT DELETE ROWS;
9+
10+
BEGIN;
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INSERT INTO temptest VALUES (1);
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INSERT INTO temptest VALUES (2);
13+
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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 GLOBAL 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 foreign keys
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BEGIN;
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CREATE GLOBAL TEMP TABLE temptest1(col int PRIMARY KEY);
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CREATE GLOBAL 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 GLOBAL TEMP TABLE temptest3(col int PRIMARY KEY) ON COMMIT DELETE ROWS;
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CREATE GLOBAL TEMP TABLE temptest4(col int REFERENCES temptest3);
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COMMIT;
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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 GLOBAL TEMP TABLE temp_parted_oncommit (a int)
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partition by list (a) on commit delete rows;
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CREATE GLOBAL 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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-- 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 GLOBAL 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 GLOBAL 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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insert into temp_parted_oncommit_test values (1);
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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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-- Data on the parent is removed, and the child goes away.
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begin;
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CREATE GLOBAL TEMP TABLE temp_inh_oncommit_test (a int) on commit delete rows;
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CREATE GLOBAL TEMP TABLE temp_inh_oncommit_test1 ()
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inherits(temp_inh_oncommit_test) on commit preserve rows;
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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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-- two relations remain
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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.
95+
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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';
112+
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-- These generate errors about temporary tables.
114+
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 GLOBAL 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
140+
-- creation is pending, so check after that. First reset the connection
141+
-- to remove the temporary namespace.
142+
\c -
143+
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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