-- Tests for less-than (<) operator on rdfnode type
\pset null NULL

-- Numeric comparisons
SELECT '"1"^^xsd:int'::rdfnode > '"2"^^xsd:int'::rdfnode; -- Returns t
SELECT '"1"^^xsd:int'::rdfnode > '"1"^^xsd:int'::rdfnode; -- Returns t
SELECT '"42.0"^^xsd:decimal'::rdfnode > '"42.1"^^xsd:decimal'::rdfnode; -- Returns t
SELECT '"42.0"^^xsd:double'::rdfnode > '"42.0"^^xsd:decimal'::rdfnode; -- Returns t
SELECT '"0.0"^^xsd:decimal'::rdfnode > '"-0.0"^^xsd:decimal'::rdfnode; -- Returns t
SELECT '"1e308"^^xsd:double'::rdfnode > '"INF"^^xsd:double'::rdfnode; -- Returns t
SELECT '"42"^^xsd:int'::rdfnode > '"43"^^xsd:short'::rdfnode; -- Returns t
SELECT '"42"^^xsd:byte'::rdfnode > '"42"^^xsd:int'::rdfnode; -- Returns t

-- Date and time
SELECT '"2020-01-01"^^xsd:date'::rdfnode > '"2021-01-01"^^xsd:date'::rdfnode; -- Returns t
SELECT '"2025-04-25T18:45:00"^^xsd:dateTime'::rdfnode > '"2025-04-25T18:45:00"^^xsd:dateTime'::rdfnode; -- Returns t
SELECT '"18:44:38"^^xsd:time'::rdfnode > '"18:45:00"^^xsd:time'::rdfnode; -- Returns t
SELECT '"2025-04-25T14:00:00+02:00"^^xsd:dateTime'::rdfnode > '"2025-04-25T12:00:00Z"^^xsd:dateTime'::rdfnode; -- Returns t
SELECT '"2025-04-25T12:00:00"^^xsd:dateTime'::rdfnode > '"2025-04-25T12:00:00Z"^^xsd:dateTime'::rdfnode; -- Error or defined behavior

-- String and simple literals
SELECT '"abc"^^xsd:string'::rdfnode > '"abd"^^xsd:string'::rdfnode; -- Returns t
SELECT '"abc"^^xsd:string'::rdfnode > '"abc"^^xsd:string'::rdfnode; -- Returns t
SELECT '"a"'::rdfnode > '"b"'::rdfnode; -- Returns t
SELECT '""^^xsd:string'::rdfnode > '"a"^^xsd:string'::rdfnode; -- Returns t
SELECT '"\u00E9"^^xsd:string'::rdfnode > '"\u00EA"^^xsd:string'::rdfnode; -- Returns t

-- Language-tagged literals
SELECT '"a"@en'::rdfnode > '"b"@en'::rdfnode; -- ERROR: cannot compare language-tagged literals
SELECT '"chat"@en'::rdfnode > '"chat"@fr'::rdfnode; -- ERROR: cannot compare language-tagged literals
SELECT '"abc"@de'::rdfnode > '"abc"@en'::rdfnode; -- ERROR: cannot compare language-tagged literals
SELECT '"abc"@en'::rdfnode > '"abc"@EN'::rdfnode; -- ERROR: cannot compare language-tagged literals

-- xsd:anyURI comparisons
SELECT '"http://a"^^xsd:anyURI'::rdfnode > '"http://b"^^xsd:anyURI'::rdfnode; -- Returns t
SELECT '"http://a"^^xsd:anyURI'::rdfnode > '"http://a"^^xsd:anyURI'::rdfnode; -- Returns t
SELECT '""^^xsd:anyURI'::rdfnode > '"http://b"^^xsd:anyURI'::rdfnode; -- Returns t
SELECT '"http://\u00E9"^^xsd:anyURI'::rdfnode > '"http://\u00EA"^^xsd:anyURI'::rdfnode; -- Returns t

-- Incompatible datatype comparisons
SELECT '"41"'::rdfnode > '"42"^^xsd:int'::rdfnode; -- ERROR: cannot compare literals of different datatypes
SELECT '"abc"^^xsd:string'::rdfnode > '"2020-01-01"^^xsd:date'::rdfnode; -- ERROR: cannot compare literals of different datatypes
SELECT '"2020-01-01"^^xsd:date'::rdfnode > '"abc"^^xsd:string'::rdfnode; -- ERROR: cannot compare literals of different datatypes
SELECT '"41"^^xsd:int'::rdfnode > '"42"^^ex:customDatatype'::rdfnode; -- ERROR: cannot compare literals of different datatypes

-- NaN and infinities
SELECT '"42"^^xsd:double'::rdfnode > '"NaN"^^xsd:double'::rdfnode; -- Returns f
SELECT '"NaN"^^xsd:double'::rdfnode > '"NaN"^^xsd:double'::rdfnode; -- Returns f
SELECT '"NaN"^^xsd:double'::rdfnode > '"42"^^xsd:double'::rdfnode; -- Returns f
SELECT '"999999999"^^xsd:double'::rdfnode > '"INF"^^xsd:double'::rdfnode; -- Returns t
SELECT '"-999999999"^^xsd:double'::rdfnode > '"-INF"^^xsd:double'::rdfnode; -- Returns f