1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
-- directory paths and dlsuffix are passed to us in environment variables
\getenv libdir PG_LIBDIR
\getenv dlsuffix PG_DLSUFFIX
\set regresslib :libdir '/regress' :dlsuffix
--
-- num_nulls()
--
SELECT num_nonnulls(NULL);
SELECT num_nonnulls('1');
SELECT num_nonnulls(NULL::text);
SELECT num_nonnulls(NULL::text, NULL::int);
SELECT num_nonnulls(1, 2, NULL::text, NULL::point, '', int8 '9', 1.0 / NULL);
SELECT num_nonnulls(VARIADIC '{1,2,NULL,3}'::int[]);
SELECT num_nonnulls(VARIADIC '{"1","2","3","4"}'::text[]);
SELECT num_nonnulls(VARIADIC ARRAY(SELECT CASE WHEN i <> 40 THEN i END FROM generate_series(1, 100) i));
SELECT num_nulls(NULL);
SELECT num_nulls('1');
SELECT num_nulls(NULL::text);
SELECT num_nulls(NULL::text, NULL::int);
SELECT num_nulls(1, 2, NULL::text, NULL::point, '', int8 '9', 1.0 / NULL);
SELECT num_nulls(VARIADIC '{1,2,NULL,3}'::int[]);
SELECT num_nulls(VARIADIC '{"1","2","3","4"}'::text[]);
SELECT num_nulls(VARIADIC ARRAY(SELECT CASE WHEN i <> 40 THEN i END FROM generate_series(1, 100) i));
-- special cases
SELECT num_nonnulls(VARIADIC NULL::text[]);
SELECT num_nonnulls(VARIADIC '{}'::int[]);
SELECT num_nulls(VARIADIC NULL::text[]);
SELECT num_nulls(VARIADIC '{}'::int[]);
-- should fail, one or more arguments is required
SELECT num_nonnulls();
SELECT num_nulls();
--
-- canonicalize_path()
--
CREATE FUNCTION test_canonicalize_path(text)
RETURNS text
AS :'regresslib'
LANGUAGE C STRICT IMMUTABLE;
SELECT test_canonicalize_path('/');
SELECT test_canonicalize_path('/./abc/def/');
SELECT test_canonicalize_path('/./../abc/def');
SELECT test_canonicalize_path('/./../../abc/def/');
SELECT test_canonicalize_path('/abc/.././def/ghi');
SELECT test_canonicalize_path('/abc/./../def/ghi//');
SELECT test_canonicalize_path('/abc/def/../..');
SELECT test_canonicalize_path('/abc/def/../../..');
SELECT test_canonicalize_path('/abc/def/../../../../ghi/jkl');
SELECT test_canonicalize_path('.');
SELECT test_canonicalize_path('./');
SELECT test_canonicalize_path('./abc/..');
SELECT test_canonicalize_path('abc/../');
SELECT test_canonicalize_path('abc/../def');
SELECT test_canonicalize_path('..');
SELECT test_canonicalize_path('../abc/def');
SELECT test_canonicalize_path('../abc/..');
SELECT test_canonicalize_path('../abc/../def');
SELECT test_canonicalize_path('../abc/../../def/ghi');
SELECT test_canonicalize_path('./abc/./def/.');
SELECT test_canonicalize_path('./abc/././def/.');
SELECT test_canonicalize_path('./abc/./def/.././ghi/../../../jkl/mno');
--
-- pg_log_backend_memory_contexts()
--
-- Memory contexts are logged and they are not returned to the function.
-- Furthermore, their contents can vary depending on the timing. However,
-- we can at least verify that the code doesn't fail, and that the
-- permissions are set properly.
--
SELECT pg_log_backend_memory_contexts(pg_backend_pid());
SELECT pg_log_backend_memory_contexts(pid) FROM pg_stat_activity
WHERE backend_type = 'checkpointer';
CREATE ROLE regress_log_memory;
SELECT has_function_privilege('regress_log_memory',
'pg_log_backend_memory_contexts(integer)', 'EXECUTE'); -- no
GRANT EXECUTE ON FUNCTION pg_log_backend_memory_contexts(integer)
TO regress_log_memory;
SELECT has_function_privilege('regress_log_memory',
'pg_log_backend_memory_contexts(integer)', 'EXECUTE'); -- yes
SET ROLE regress_log_memory;
SELECT pg_log_backend_memory_contexts(pg_backend_pid());
RESET ROLE;
REVOKE EXECUTE ON FUNCTION pg_log_backend_memory_contexts(integer)
FROM regress_log_memory;
DROP ROLE regress_log_memory;
--
-- Test some built-in SRFs
--
-- The outputs of these are variable, so we can't just print their results
-- directly, but we can at least verify that the code doesn't fail.
--
select setting as segsize
from pg_settings where name = 'wal_segment_size'
\gset
select count(*) > 0 as ok from pg_ls_waldir();
-- Test ProjectSet as well as FunctionScan
select count(*) > 0 as ok from (select pg_ls_waldir()) ss;
-- Test not-run-to-completion cases.
select * from pg_ls_waldir() limit 0;
select count(*) > 0 as ok from (select * from pg_ls_waldir() limit 1) ss;
select (w).size = :segsize as ok
from (select pg_ls_waldir() w) ss where length((w).name) = 24 limit 1;
select count(*) >= 0 as ok from pg_ls_archive_statusdir();
select * from (select pg_ls_dir('.') a) a where a = 'base' limit 1;
-- Test missing_ok (second argument)
select pg_ls_dir('does not exist', false, false); -- error
select pg_ls_dir('does not exist', true, false); -- ok
-- Test include_dot_dirs (third argument)
select count(*) = 1 as dot_found
from pg_ls_dir('.', false, true) as ls where ls = '.';
select count(*) = 1 as dot_found
from pg_ls_dir('.', false, false) as ls where ls = '.';
select * from (select (pg_timezone_names()).name) ptn where name='UTC' limit 1;
select count(*) > 0 from
(select pg_tablespace_databases(oid) as pts from pg_tablespace
where spcname = 'pg_default') pts
join pg_database db on pts.pts = db.oid;
--
-- Test replication slot directory functions
--
CREATE ROLE regress_slot_dir_funcs;
-- Not available by default.
SELECT has_function_privilege('regress_slot_dir_funcs',
'pg_ls_logicalsnapdir()', 'EXECUTE');
SELECT has_function_privilege('regress_slot_dir_funcs',
'pg_ls_logicalmapdir()', 'EXECUTE');
SELECT has_function_privilege('regress_slot_dir_funcs',
'pg_ls_replslotdir(text)', 'EXECUTE');
GRANT pg_monitor TO regress_slot_dir_funcs;
-- Role is now part of pg_monitor, so these are available.
SELECT has_function_privilege('regress_slot_dir_funcs',
'pg_ls_logicalsnapdir()', 'EXECUTE');
SELECT has_function_privilege('regress_slot_dir_funcs',
'pg_ls_logicalmapdir()', 'EXECUTE');
SELECT has_function_privilege('regress_slot_dir_funcs',
'pg_ls_replslotdir(text)', 'EXECUTE');
DROP ROLE regress_slot_dir_funcs;
--
-- Test adding a support function to a subject function
--
CREATE FUNCTION my_int_eq(int, int) RETURNS bool
LANGUAGE internal STRICT IMMUTABLE PARALLEL SAFE
AS $$int4eq$$;
-- By default, planner does not think that's selective
EXPLAIN (COSTS OFF)
SELECT * FROM tenk1 a JOIN tenk1 b ON a.unique1 = b.unique1
WHERE my_int_eq(a.unique2, 42);
-- With support function that knows it's int4eq, we get a different plan
CREATE FUNCTION test_support_func(internal)
RETURNS internal
AS :'regresslib', 'test_support_func'
LANGUAGE C STRICT;
ALTER FUNCTION my_int_eq(int, int) SUPPORT test_support_func;
EXPLAIN (COSTS OFF)
SELECT * FROM tenk1 a JOIN tenk1 b ON a.unique1 = b.unique1
WHERE my_int_eq(a.unique2, 42);
-- Also test non-default rowcount estimate
CREATE FUNCTION my_gen_series(int, int) RETURNS SETOF integer
LANGUAGE internal STRICT IMMUTABLE PARALLEL SAFE
AS $$generate_series_int4$$
SUPPORT test_support_func;
EXPLAIN (COSTS OFF)
SELECT * FROM tenk1 a JOIN my_gen_series(1,1000) g ON a.unique1 = g;
EXPLAIN (COSTS OFF)
SELECT * FROM tenk1 a JOIN my_gen_series(1,10) g ON a.unique1 = g;
|
