aboutsummaryrefslogtreecommitdiff
path: root/src/test/regress/sql/expressions.sql
blob: 9cd37cf9d42e469cda67a3743c6f1b1c364e9ca5 (plain)
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
--
-- expression evaluated tests that don't fit into a more specific file
--

--
-- Tests for SQLVAlueFunction
--


-- current_date  (always matches because of transactional behaviour)
SELECT date(now())::text = current_date::text;


-- current_time / localtime
SELECT now()::timetz::text = current_time::text;
SELECT now()::time::text = localtime::text;

-- current_timestamp / localtimestamp (always matches because of transactional behaviour)
SELECT current_timestamp = NOW();
-- precision
SELECT length(current_timestamp::text) >= length(current_timestamp(0)::text);
-- localtimestamp
SELECT now()::timestamp::text = localtimestamp::text;

-- current_role/user/user is tested in rolenames.sql

-- current database / catalog
SELECT current_catalog = current_database();

-- current_schema
SELECT current_schema;
SET search_path = 'notme';
SELECT current_schema;
SET search_path = 'pg_catalog';
SELECT current_schema;
RESET search_path;


--
-- Test parsing of a no-op cast to a type with unspecified typmod
--
begin;

create table numeric_tbl (f1 numeric(18,3), f2 numeric);

create view numeric_view as
  select
    f1, f1::numeric(16,4) as f1164, f1::numeric as f1n,
    f2, f2::numeric(16,4) as f2164, f2::numeric as f2n
  from numeric_tbl;

\d+ numeric_view

explain (verbose, costs off) select * from numeric_view;

-- bpchar, lacking planner support for its length coercion function,
-- could behave differently

create table bpchar_tbl (f1 character(16) unique, f2 bpchar);

create view bpchar_view as
  select
    f1, f1::character(14) as f114, f1::bpchar as f1n,
    f2, f2::character(14) as f214, f2::bpchar as f2n
  from bpchar_tbl;

\d+ bpchar_view

explain (verbose, costs off) select * from bpchar_view
  where f1::bpchar = 'foo';

rollback;