204 lines
4.1 KiB
Plaintext
204 lines
4.1 KiB
Plaintext
--
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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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tcol
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------
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(0 rows)
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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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col
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-----
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(0 rows)
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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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tcol
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------
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2.1
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(1 row)
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DROP TABLE temptest;
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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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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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ERROR: relation "temptest" does not exist
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LINE 1: SELECT * FROM temptest;
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^
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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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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 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 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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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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ERROR: relation "temptest" does not exist
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LINE 1: SELECT * FROM temptest;
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^
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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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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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ERROR: relation "temptest" does not exist
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LINE 1: SELECT * FROM temptest;
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^
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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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ERROR: ON COMMIT can only be used on temporary tables
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CREATE TABLE temptest(col) ON COMMIT DELETE ROWS AS SELECT 1;
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ERROR: ON COMMIT can only be used on temporary tables
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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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NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "temptest1_pkey" for table "temptest1"
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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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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 TEMP TABLE temptest3(col int PRIMARY KEY) ON COMMIT DELETE ROWS;
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NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "temptest3_pkey" for table "temptest3"
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CREATE 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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-- 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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f1
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------
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temp
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(1 row)
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select whoami();
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whoami
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--------
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public
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(1 row)
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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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f1
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------
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temp
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(1 row)
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select whoami();
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whoami
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--------
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public
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(1 row)
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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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f1
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--------
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public
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(1 row)
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select whoami();
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whoami
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--------
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public
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(1 row)
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-- you can invoke a temp function explicitly, though
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select pg_temp.whoami();
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whoami
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--------
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temp
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(1 row)
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drop table public.whereami;
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