--
-- 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;
 ?column? 
----------
 t
(1 row)

-- current_time / localtime
SELECT now()::timetz::text = current_time::text;
 ?column? 
----------
 t
(1 row)

SELECT now()::time::text = localtime::text;
 ?column? 
----------
 t
(1 row)

-- current_timestamp / localtimestamp (always matches because of transactional behaviour)
SELECT current_timestamp = NOW();
 ?column? 
----------
 t
(1 row)

-- precision
SELECT length(current_timestamp::text) >= length(current_timestamp(0)::text);
 ?column? 
----------
 t
(1 row)

-- localtimestamp
SELECT now()::timestamp::text = localtimestamp::text;
 ?column? 
----------
 t
(1 row)

-- current_role/user/user is tested in rolenames.sql
-- current database / catalog
SELECT current_catalog = current_database();
 ?column? 
----------
 t
(1 row)

-- current_schema
SELECT current_schema;
 current_schema 
----------------
 public
(1 row)

SET search_path = 'notme';
SELECT current_schema;
 current_schema 
----------------
 
(1 row)

SET search_path = 'pg_catalog';
SELECT current_schema;
 current_schema 
----------------
 pg_catalog
(1 row)

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
                           View "public.numeric_view"
 Column |     Type      | Collation | Nullable | Default | Storage | Description 
--------+---------------+-----------+----------+---------+---------+-------------
 f1     | numeric(18,3) |           |          |         | main    | 
 f1164  | numeric(16,4) |           |          |         | main    | 
 f1n    | numeric       |           |          |         | main    | 
 f2     | numeric       |           |          |         | main    | 
 f2164  | numeric(16,4) |           |          |         | main    | 
 f2n    | numeric       |           |          |         | main    | 
View definition:
 SELECT numeric_tbl.f1,
    numeric_tbl.f1::numeric(16,4) AS f1164,
    numeric_tbl.f1::numeric AS f1n,
    numeric_tbl.f2,
    numeric_tbl.f2::numeric(16,4) AS f2164,
    numeric_tbl.f2 AS f2n
   FROM numeric_tbl;

explain (verbose, costs off) select * from numeric_view;
                                                                      QUERY PLAN                                                                       
-------------------------------------------------------------------------------------------------------------------------------------------------------
 Seq Scan on public.numeric_tbl
   Output: numeric_tbl.f1, (numeric_tbl.f1)::numeric(16,4), (numeric_tbl.f1)::numeric, numeric_tbl.f2, (numeric_tbl.f2)::numeric(16,4), numeric_tbl.f2
(2 rows)

-- 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
                            View "public.bpchar_view"
 Column |     Type      | Collation | Nullable | Default | Storage  | Description 
--------+---------------+-----------+----------+---------+----------+-------------
 f1     | character(16) |           |          |         | extended | 
 f114   | character(14) |           |          |         | extended | 
 f1n    | bpchar        |           |          |         | extended | 
 f2     | bpchar        |           |          |         | extended | 
 f214   | character(14) |           |          |         | extended | 
 f2n    | bpchar        |           |          |         | extended | 
View definition:
 SELECT bpchar_tbl.f1,
    bpchar_tbl.f1::character(14) AS f114,
    bpchar_tbl.f1::bpchar AS f1n,
    bpchar_tbl.f2,
    bpchar_tbl.f2::character(14) AS f214,
    bpchar_tbl.f2 AS f2n
   FROM bpchar_tbl;

explain (verbose, costs off) select * from bpchar_view
  where f1::bpchar = 'foo';
                                                                   QUERY PLAN                                                                   
------------------------------------------------------------------------------------------------------------------------------------------------
 Index Scan using bpchar_tbl_f1_key on public.bpchar_tbl
   Output: bpchar_tbl.f1, (bpchar_tbl.f1)::character(14), (bpchar_tbl.f1)::bpchar, bpchar_tbl.f2, (bpchar_tbl.f2)::character(14), bpchar_tbl.f2
   Index Cond: ((bpchar_tbl.f1)::bpchar = 'foo'::bpchar)
(3 rows)

rollback;