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f0b051e322
Remove superuser check, allowing any user granted permissions on pg_log_backend_memory_contexts() to log the memory contexts of any backend. Note that this could allow a privileged non-superuser to log the memory contexts of a superuser backend, but as discussed, that does not seem to be a problem. Reviewed-by: Nathan Bossart, Bharath Rupireddy, Michael Paquier, Kyotaro Horiguchi, Andres Freund Discussion: https://postgr.es/m/e5cf6684d17c8d1ef4904ae248605ccd6da03e72.camel@j-davis.com
125 lines
4.0 KiB
PL/PgSQL
125 lines
4.0 KiB
PL/PgSQL
--
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-- num_nulls()
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--
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SELECT num_nonnulls(NULL);
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SELECT num_nonnulls('1');
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SELECT num_nonnulls(NULL::text);
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SELECT num_nonnulls(NULL::text, NULL::int);
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SELECT num_nonnulls(1, 2, NULL::text, NULL::point, '', int8 '9', 1.0 / NULL);
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SELECT num_nonnulls(VARIADIC '{1,2,NULL,3}'::int[]);
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SELECT num_nonnulls(VARIADIC '{"1","2","3","4"}'::text[]);
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SELECT num_nonnulls(VARIADIC ARRAY(SELECT CASE WHEN i <> 40 THEN i END FROM generate_series(1, 100) i));
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SELECT num_nulls(NULL);
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SELECT num_nulls('1');
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SELECT num_nulls(NULL::text);
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SELECT num_nulls(NULL::text, NULL::int);
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SELECT num_nulls(1, 2, NULL::text, NULL::point, '', int8 '9', 1.0 / NULL);
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SELECT num_nulls(VARIADIC '{1,2,NULL,3}'::int[]);
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SELECT num_nulls(VARIADIC '{"1","2","3","4"}'::text[]);
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SELECT num_nulls(VARIADIC ARRAY(SELECT CASE WHEN i <> 40 THEN i END FROM generate_series(1, 100) i));
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-- special cases
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SELECT num_nonnulls(VARIADIC NULL::text[]);
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SELECT num_nonnulls(VARIADIC '{}'::int[]);
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SELECT num_nulls(VARIADIC NULL::text[]);
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SELECT num_nulls(VARIADIC '{}'::int[]);
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-- should fail, one or more arguments is required
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SELECT num_nonnulls();
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SELECT num_nulls();
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--
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-- pg_log_backend_memory_contexts()
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--
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-- Memory contexts are logged and they are not returned to the function.
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-- Furthermore, their contents can vary depending on the timing. However,
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-- we can at least verify that the code doesn't fail, and that the
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-- permissions are set properly.
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--
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SELECT pg_log_backend_memory_contexts(pg_backend_pid());
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CREATE ROLE regress_log_memory;
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SELECT has_function_privilege('regress_log_memory',
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'pg_log_backend_memory_contexts(integer)', 'EXECUTE'); -- no
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GRANT EXECUTE ON FUNCTION pg_log_backend_memory_contexts(integer)
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TO regress_log_memory;
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SELECT has_function_privilege('regress_log_memory',
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'pg_log_backend_memory_contexts(integer)', 'EXECUTE'); -- yes
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SET ROLE regress_log_memory;
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SELECT pg_log_backend_memory_contexts(pg_backend_pid());
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RESET ROLE;
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REVOKE EXECUTE ON FUNCTION pg_log_backend_memory_contexts(integer)
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FROM regress_log_memory;
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DROP ROLE regress_log_memory;
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--
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-- Test some built-in SRFs
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--
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-- The outputs of these are variable, so we can't just print their results
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-- directly, but we can at least verify that the code doesn't fail.
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--
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select setting as segsize
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from pg_settings where name = 'wal_segment_size'
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\gset
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select count(*) > 0 as ok from pg_ls_waldir();
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-- Test ProjectSet as well as FunctionScan
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select count(*) > 0 as ok from (select pg_ls_waldir()) ss;
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-- Test not-run-to-completion cases.
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select * from pg_ls_waldir() limit 0;
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select count(*) > 0 as ok from (select * from pg_ls_waldir() limit 1) ss;
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select (w).size = :segsize as ok
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from (select pg_ls_waldir() w) ss where length((w).name) = 24 limit 1;
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select count(*) >= 0 as ok from pg_ls_archive_statusdir();
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select * from (select pg_ls_dir('.') a) a where a = 'base' limit 1;
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select * from (select (pg_timezone_names()).name) ptn where name='UTC' limit 1;
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select count(*) > 0 from
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(select pg_tablespace_databases(oid) as pts from pg_tablespace
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where spcname = 'pg_default') pts
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join pg_database db on pts.pts = db.oid;
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--
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-- Test adding a support function to a subject function
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--
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CREATE FUNCTION my_int_eq(int, int) RETURNS bool
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LANGUAGE internal STRICT IMMUTABLE PARALLEL SAFE
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AS $$int4eq$$;
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-- By default, planner does not think that's selective
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EXPLAIN (COSTS OFF)
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SELECT * FROM tenk1 a JOIN tenk1 b ON a.unique1 = b.unique1
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WHERE my_int_eq(a.unique2, 42);
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-- With support function that knows it's int4eq, we get a different plan
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ALTER FUNCTION my_int_eq(int, int) SUPPORT test_support_func;
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EXPLAIN (COSTS OFF)
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SELECT * FROM tenk1 a JOIN tenk1 b ON a.unique1 = b.unique1
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WHERE my_int_eq(a.unique2, 42);
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-- Also test non-default rowcount estimate
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CREATE FUNCTION my_gen_series(int, int) RETURNS SETOF integer
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LANGUAGE internal STRICT IMMUTABLE PARALLEL SAFE
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AS $$generate_series_int4$$
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SUPPORT test_support_func;
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EXPLAIN (COSTS OFF)
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SELECT * FROM tenk1 a JOIN my_gen_series(1,1000) g ON a.unique1 = g;
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EXPLAIN (COSTS OFF)
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SELECT * FROM tenk1 a JOIN my_gen_series(1,10) g ON a.unique1 = g;
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