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

SELECT '"foo"^^xsd:string'::rdfnode;
                     rdfnode                      
--------------------------------------------------
 "foo"^^<http://www.w3.org/2001/XMLSchema#string>
(1 row)

SELECT '"foo"@es'::rdfnode;
 rdfnode  
----------
 "foo"@es
(1 row)

SELECT '"foo"@es'::rdfnode::text;
   text   
----------
 "foo"@es
(1 row)

SELECT '"foo"@es'::rdfnode::text::rdfnode;
 rdfnode  
----------
 "foo"@es
(1 row)

SELECT '"foo"^^xsd:string'::rdfnode::text::rdfnode;
                     rdfnode                      
--------------------------------------------------
 "foo"^^<http://www.w3.org/2001/XMLSchema#string>
(1 row)

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

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

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

SELECT '"forty-two"^^xsd:int'::rdfnode;
ERROR:  invalid lexical form for xsd:int: "forty-two"
LINE 1: SELECT '"forty-two"^^xsd:int'::rdfnode;
               ^
SELECT '"invalid"^^xsd:dateTime'::rdfnode;
ERROR:  invalid lexical form for xsd:dateTime: "invalid"
LINE 1: SELECT '"invalid"^^xsd:dateTime'::rdfnode;
               ^
SELECT '"25:00:00"^^xsd:time'::rdfnode;
ERROR:  invalid lexical form for xsd:time: "25:00:00"
LINE 1: SELECT '"25:00:00"^^xsd:time'::rdfnode;
               ^
SELECT '"2025-13-01"^^xsd:date'::rdfnode;
ERROR:  invalid lexical form for xsd:date: "2025-13-01"
LINE 1: SELECT '"2025-13-01"^^xsd:date'::rdfnode;
               ^
SELECT '"abc"^^invalid:datatype'::rdfnode;
          rdfnode          
---------------------------
 "abc"^^<invalid:datatype>
(1 row)

SELECT '"abc"@invalid_lang'::rdfnode;
ERROR:  invalid language tag: "invalid_lang"
LINE 1: SELECT '"abc"@invalid_lang'::rdfnode;
               ^
SELECT '"foo'::rdfnode;
 rdfnode 
---------
 "\"foo"
(1 row)

SELECT 'f"o"o'::rdfnode;
  rdfnode  
-----------
 "f\"o\"o"
(1 row)

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

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

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

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

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

SELECT '"x^^y"'::rdfnode;           -- → "x^^y"
 rdfnode 
---------
 "x^^y"
(1 row)

SELECT '"a\\"b"@en'::rdfnode;       -- → "a\"b"@en
  rdfnode   
------------
 "a\\"b"@en
(1 row)

SELECT '"𝄞"^^<http://example.org/dt>'::rdfnode;
           rdfnode            
------------------------------
 "𝄞"^^<http://example.org/dt>
(1 row)

SELECT '"9223372036854775.807"^^<http://www.w3.org/2001/XMLSchema#decimal>'::rdfnode::numeric;
       numeric        
----------------------
 9223372036854775.807
(1 row)

SELECT '"-9223372036854775.807"^^<http://www.w3.org/2001/XMLSchema#decimal>'::rdfnode::numeric;
        numeric        
-----------------------
 -9223372036854775.807
(1 row)

SELECT '"9223372036854775.807"^^<http://www.w3.org/2001/XMLSchema#decimal>'::rdfnode::numeric::rdfnode;
                              rdfnode                               
--------------------------------------------------------------------
 "9223372036854775.807"^^<http://www.w3.org/2001/XMLSchema#decimal>
(1 row)

SELECT '"-9223372036854775.807"^^<http://www.w3.org/2001/XMLSchema#decimal>'::rdfnode::numeric::rdfnode;
                               rdfnode                               
---------------------------------------------------------------------
 "-9223372036854775.807"^^<http://www.w3.org/2001/XMLSchema#decimal>
(1 row)

SELECT '"42.73"^^xsd:double'::rdfnode::double precision;
 float8 
--------
  42.73
(1 row)

SELECT '"-42.73"^^xsd:double'::rdfnode::double precision;
 float8 
--------
 -42.73
(1 row)

SELECT '"42.73"^^xsd:double'::rdfnode::double precision::rdfnode;
                      rdfnode                       
----------------------------------------------------
 "42.73"^^<http://www.w3.org/2001/XMLSchema#double>
(1 row)

SELECT '"-42.73"^^xsd:double'::rdfnode::double precision::rdfnode;
                       rdfnode                       
-----------------------------------------------------
 "-42.73"^^<http://www.w3.org/2001/XMLSchema#double>
(1 row)

SELECT '"4.2E1"^^xsd:double'::rdfnode::double precision;
 float8 
--------
     42
(1 row)

SELECT '"-4.2E1"^^xsd:double'::rdfnode::double precision;
 float8 
--------
    -42
(1 row)

SELECT 42.73::real::rdfnode;
                      rdfnode                      
---------------------------------------------------
 "42.73"^^<http://www.w3.org/2001/XMLSchema#float>
(1 row)

SELECT 42.73::real::rdfnode::real;
 float4 
--------
  42.73
(1 row)

SELECT (-42.73)::real::rdfnode;
                      rdfnode                       
----------------------------------------------------
 "-42.73"^^<http://www.w3.org/2001/XMLSchema#float>
(1 row)

SELECT (-42.73)::real::rdfnode::real;
 float4 
--------
 -42.73
(1 row)

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

SELECT 'INF'::real::rdfnode::real;
  float4  
----------
 Infinity
(1 row)

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

SELECT '-INF'::real::rdfnode::real;
  float4   
-----------
 -Infinity
(1 row)

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

SELECT 'NaN'::real::rdfnode::real;
 float4 
--------
    NaN
(1 row)

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

SELECT 42::bigint::rdfnode::bigint;
 int8 
------
   42
(1 row)

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

SELECT (-42)::bigint::rdfnode::bigint;
 int8 
------
  -42
(1 row)

SELECT 42746357267238767::bigint::rdfnode;
                           rdfnode                            
--------------------------------------------------------------
 "42746357267238767"^^<http://www.w3.org/2001/XMLSchema#long>
(1 row)

SELECT 42746357267238767::bigint::rdfnode::bigint;
       int8        
-------------------
 42746357267238767
(1 row)

SELECT (-42746357267238767)::bigint::rdfnode;
                            rdfnode                            
---------------------------------------------------------------
 "-42746357267238767"^^<http://www.w3.org/2001/XMLSchema#long>
(1 row)

SELECT (-42746357267238767)::bigint::rdfnode::bigint;
        int8        
--------------------
 -42746357267238767
(1 row)

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

SELECT 42::int::rdfnode::int;
 int4 
------
   42
(1 row)

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

SELECT (-42)::int::rdfnode::int;
 int4 
------
  -42
(1 row)

SELECT 427463::int::rdfnode;
                     rdfnode                      
--------------------------------------------------
 "427463"^^<http://www.w3.org/2001/XMLSchema#int>
(1 row)

SELECT 427463::int::rdfnode::int;
  int4  
--------
 427463
(1 row)

SELECT (-427463)::int::rdfnode;
                      rdfnode                      
---------------------------------------------------
 "-427463"^^<http://www.w3.org/2001/XMLSchema#int>
(1 row)

SELECT (-427463)::int::rdfnode::int;
  int4   
---------
 -427463
(1 row)

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

SELECT 42::smallint::rdfnode::smallint;
 int2 
------
   42
(1 row)

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

SELECT (-42)::smallint::rdfnode::smallint;
 int2 
------
  -42
(1 row)

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

SELECT 4273::smallint::rdfnode::smallint;
 int2 
------
 4273
(1 row)

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

SELECT (-4273)::smallint::rdfnode::smallint;
 int2  
-------
 -4273
(1 row)

SELECT '2025-04-25 18:44:38.149101+00'::timestamptz::rdfnode;
                                  rdfnode                                   
----------------------------------------------------------------------------
 "2025-04-25T18:44:38.149101Z"^^<http://www.w3.org/2001/XMLSchema#dateTime>
(1 row)

SELECT '2025-04-25 18:44:38.149101+00'::timestamptz::rdfnode::timestamptz;
             timestamptz             
-------------------------------------
 Fri Apr 25 11:44:38.149101 2025 PDT
(1 row)

SELECT '2025-04-25 18:44:38'::timestamptz::rdfnode;
                                  rdfnode                                   
----------------------------------------------------------------------------
 "2025-04-26T01:44:38.000000Z"^^<http://www.w3.org/2001/XMLSchema#dateTime>
(1 row)

SELECT '2025-04-25 18:44:38'::timestamptz::rdfnode::timestamptz;
         timestamptz          
------------------------------
 Fri Apr 25 18:44:38 2025 PDT
(1 row)

SELECT '2025-04-25 18:44:38'::timestamp::rdfnode;
                              rdfnode                               
--------------------------------------------------------------------
 "2025-04-25T18:44:38"^^<http://www.w3.org/2001/XMLSchema#dateTime>
(1 row)

SELECT '2025-04-25 18:44:38'::timestamp::rdfnode::timestamp;
        timestamp         
--------------------------
 Fri Apr 25 18:44:38 2025
(1 row)

SELECT '2025-04-25 18:44:38'::timestamp::rdfnode;
                              rdfnode                               
--------------------------------------------------------------------
 "2025-04-25T18:44:38"^^<http://www.w3.org/2001/XMLSchema#dateTime>
(1 row)

SELECT '2025-04-25 18:44:38'::timestamp::rdfnode::timestamp;
        timestamp         
--------------------------
 Fri Apr 25 18:44:38 2025
(1 row)

SELECT '2020-05-12'::date::rdfnode;
                        rdfnode                        
-------------------------------------------------------
 "2020-05-12"^^<http://www.w3.org/2001/XMLSchema#date>
(1 row)

SELECT '2020-05-12'::date::rdfnode::date;
    date    
------------
 05-12-2020
(1 row)

SELECT '18:44:38'::time::rdfnode;
                       rdfnode                       
-----------------------------------------------------
 "18:44:38"^^<http://www.w3.org/2001/XMLSchema#time>
(1 row)

SELECT '18:44:38'::time::rdfnode::time;
   time   
----------
 18:44:38
(1 row)

SELECT '00:00:00'::time::rdfnode;
                       rdfnode                       
-----------------------------------------------------
 "00:00:00"^^<http://www.w3.org/2001/XMLSchema#time>
(1 row)

SELECT '00:00:00'::time::rdfnode::time;
   time   
----------
 00:00:00
(1 row)

SELECT '04:05:06-08:00'::timetz::rdfnode;
                        rdfnode                         
--------------------------------------------------------
 "04:05:06-08"^^<http://www.w3.org/2001/XMLSchema#time>
(1 row)

SELECT '04:05:06-08:00'::timetz::rdfnode::timetz;
   timetz    
-------------
 04:05:06-08
(1 row)

SELECT '04:05:06 PST'::timetz::rdfnode;
                        rdfnode                         
--------------------------------------------------------
 "04:05:06-08"^^<http://www.w3.org/2001/XMLSchema#time>
(1 row)

SELECT '04:05:06 PST'::timetz::rdfnode::timetz;
   timetz    
-------------
 04:05:06-08
(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 true::rdfnode::boolean;
 bool 
------
 t
(1 row)

SELECT false::rdfnode::boolean;
 bool 
------
 f
(1 row)

SELECT (1=1)::rdfnode::boolean;
 bool 
------
 t
(1 row)

SELECT (1<>1)::rdfnode::boolean;
 bool 
------
 f
(1 row)

SELECT '1 day'::interval::rdfnode;
                      rdfnode                       
----------------------------------------------------
 "P1D"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '1 hour 30 minutes'::interval::rdfnode;
                        rdfnode                         
--------------------------------------------------------
 "PT1H30M"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '2 years 3 months'::interval::rdfnode;
                       rdfnode                        
------------------------------------------------------
 "P2Y3M"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '5 days 12 hours'::interval::rdfnode;
                        rdfnode                         
--------------------------------------------------------
 "P5DT12H"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval::rdfnode;
                            rdfnode                            
---------------------------------------------------------------
 "P1Y2M3DT4H5M6S"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '5.123456 seconds'::interval::rdfnode;
                          rdfnode                           
------------------------------------------------------------
 "PT5.123456S"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '0.000001 seconds'::interval::rdfnode;
                          rdfnode                           
------------------------------------------------------------
 "PT0.000001S"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '1 minute 0.5 seconds'::interval::rdfnode;
                           rdfnode                            
--------------------------------------------------------------
 "PT1M0.500000S"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '-1 year -2 months'::interval::rdfnode;
                        rdfnode                        
-------------------------------------------------------
 "-P1Y2M"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '-3 days -4 hours'::interval::rdfnode;
                        rdfnode                         
--------------------------------------------------------
 "-P3DT4H"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '0 seconds'::interval::rdfnode;
                       rdfnode                       
-----------------------------------------------------
 "PT0S"^^<http://www.w3.org/2001/XMLSchema#duration>
(1 row)

SELECT '1 year 2 months 3 days 4 hours 5 minutes 6 seconds'::interval::rdfnode::interval;
                   interval                   
----------------------------------------------
 @ 1 year 2 mons 3 days 4 hours 5 mins 6 secs
(1 row)

SELECT '-1 year -2 months'::interval::rdfnode::interval;
ERROR:  invalid input syntax for type interval: "-P1Y2M"
SELECT '5.123456 seconds'::interval::rdfnode::interval;
    interval     
-----------------
 @ 5.123456 secs
(1 row)

SELECT '0 seconds'::interval::rdfnode::interval;
 interval 
----------
 @ 0
(1 row)

SELECT '0.000001 seconds'::interval::rdfnode::interval;
    interval     
-----------------
 @ 0.000001 secs
(1 row)