SET datestyle = 'ISO, YMD';
SET timezone = 'UTC';
SELECT 42::int2::rdfnode;
                    rdfnode                     
------------------------------------------------
 "42"^^<http://www.w3.org/2001/XMLSchema#short>
(1 row)

SELECT 4273::int4::rdfnode;
                    rdfnode                     
------------------------------------------------
 "4273"^^<http://www.w3.org/2001/XMLSchema#int>
(1 row)

SELECT 123456789101112::int8::rdfnode;
                          rdfnode                           
------------------------------------------------------------
 "123456789101112"^^<http://www.w3.org/2001/XMLSchema#long>
(1 row)

SELECT 42.12345::numeric::rdfnode;
                        rdfnode                         
--------------------------------------------------------
 "42.12345"^^<http://www.w3.org/2001/XMLSchema#decimal>
(1 row)

SELECT 42.1234::float4::rdfnode;
                       rdfnode                       
-----------------------------------------------------
 "42.1234"^^<http://www.w3.org/2001/XMLSchema#float>
(1 row)

SELECT 42.123456650::float8::rdfnode;
                         rdfnode                          
----------------------------------------------------------
 "42.12345665"^^<http://www.w3.org/2001/XMLSchema#double>
(1 row)

SELECT 42.12345::double precision::rdfnode;
                        rdfnode                        
-------------------------------------------------------
 "42.12345"^^<http://www.w3.org/2001/XMLSchema#double>
(1 row)

SELECT true::rdfnode;
                      rdfnode                       
----------------------------------------------------
 "true"^^<http://www.w3.org/2001/XMLSchema#boolean>
(1 row)

SELECT false::rdfnode;
                       rdfnode                       
-----------------------------------------------------
 "false"^^<http://www.w3.org/2001/XMLSchema#boolean>
(1 row)

SELECT '"rdf_fdw"'::rdfnode;
  rdfnode  
-----------
 "rdf_fdw"
(1 row)

SELECT '"rdf_fdw"@en'::rdfnode;
   rdfnode    
--------------
 "rdf_fdw"@en
(1 row)

SELECT '2025-01-01'::date::rdfnode;
                        rdfnode                        
-------------------------------------------------------
 "2025-01-01"^^<http://www.w3.org/2001/XMLSchema#date>
(1 row)

SELECT '18:30:25'::time without time zone::rdfnode;
                       rdfnode                       
-----------------------------------------------------
 "18:30:25"^^<http://www.w3.org/2001/XMLSchema#time>
(1 row)

SELECT '2025-01-01 18:30:25'::timestamp without time zone::rdfnode;
                              rdfnode                               
--------------------------------------------------------------------
 "2025-01-01T18:30:25"^^<http://www.w3.org/2001/XMLSchema#dateTime>
(1 row)

SELECT '2025-01-01 18:30:25 UTC'::timestamp with time zone::rdfnode;
                                  rdfnode                                   
----------------------------------------------------------------------------
 "2025-01-01T18:30:25.000000Z"^^<http://www.w3.org/2001/XMLSchema#dateTime>
(1 row)

SELECT '1 year 2 months 3 weeks 4 days 5 hours 6 minutes 7 seconds'::interval::rdfnode;
                            rdfnode                             
----------------------------------------------------------------
 "P1Y2M25DT5H6M7S"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '"42"^^<http://www.w3.org/2001/XMLSchema#short>'::rdfnode::int2;
 int2 
------
   42
(1 row)

SELECT '"4273"^^<http://www.w3.org/2001/XMLSchema#int>'::rdfnode::int4;
 int4 
------
 4273
(1 row)

SELECT '"123456789101112"^^<http://www.w3.org/2001/XMLSchema#long>'::rdfnode::int8;
      int8       
-----------------
 123456789101112
(1 row)

SELECT '"42.12345"^^<http://www.w3.org/2001/XMLSchema#decimal>'::rdfnode::numeric;
 numeric  
----------
 42.12345
(1 row)

SELECT '"42.1234"^^<http://www.w3.org/2001/XMLSchema#float>'::rdfnode::float4;
 float4  
---------
 42.1234
(1 row)

SELECT '"42.123456650"^^<http://www.w3.org/2001/XMLSchema#double>'::rdfnode::float8;
   float8    
-------------
 42.12345665
(1 row)

SELECT '"true"^^<http://www.w3.org/2001/XMLSchema#boolean>'::rdfnode::boolean;
 bool 
------
 t
(1 row)

SELECT '"false"^^<http://www.w3.org/2001/XMLSchema#boolean>'::rdfnode::boolean;
 bool 
------
 f
(1 row)

SELECT '"rdf_fdw"'::rdfnode::text;
   text    
-----------
 "rdf_fdw"
(1 row)

SELECT '"rdf_fdw"@en'::rdfnode::text;
     text     
--------------
 "rdf_fdw"@en
(1 row)

SELECT '"2025-01-01"^^<http://www.w3.org/2001/XMLSchema#date>'::rdfnode::date;
    date    
------------
 2025-01-01
(1 row)

SELECT '"18:30:25"^^<http://www.w3.org/2001/XMLSchema#time>'::rdfnode::time without time zone;
   time   
----------
 18:30:25
(1 row)

SELECT '"2025-01-01T18:30:25"^^<http://www.w3.org/2001/XMLSchema#dateTime>'::rdfnode::timestamp without time zone;
      timestamp      
---------------------
 2025-01-01 18:30:25
(1 row)

SELECT '"2025-01-01T18:30:25Z"^^<http://www.w3.org/2001/XMLSchema#dateTime>'::rdfnode::timestamp with time zone;
      timestamptz       
------------------------
 2025-01-01 18:30:25+00
(1 row)

SELECT '"P1Y2M25DT5H6M7S"^^<http://www.w3.org/2001/XMLSchema#duration>'::rdfnode::interval;
                   interval                    
-----------------------------------------------
 @ 1 year 2 mons 25 days 5 hours 6 mins 7 secs
(1 row)