"Name of a column in the logical table. When generating RDF triples from a logical table row, value from the specified column is used as the graph, subject, predicate, or object (based upon the specific domain)" . . "0"^^ . "select ?fldmap as ?s, (\"Warning\") as ?severity,\n (if (bif:isnotnull (sql:R2RML_KEY_COLUMN_EXISTS (?ts, ?to, ?tn, ?col, 1)),\n bif:concat (\"rr:column refers to column \", ?col , \" that is misspelled name of column \",\n sql:R2RML_KEY_COLUMN_EXISTS (?ts, ?to, ?tn, ?col, 1), \" that the table \",\n sql:R2RML_MAIN_KEY_EXISTS (?ts, ?to, ?tn, 0), \" contains now; adjust the R2RML or the table before generating an RDF View\" ),\n bif:concat (\"rr:column refers to column \", ?col , \" that is not found in table \",\n sql:R2RML_MAIN_KEY_EXISTS (?ts, ?to, ?tn, 0), \"; adjust the R2RML or the table before generating an RDF View\" ) ) ) as ?message\n where {\n ?lt rr:tableName ?tn .\n OPTIONAL { ?lt rr:tableOwner ?to }\n OPTIONAL { ?lt rr:tableSchema ?ts }\n filter (bif:isnotnull (sql:R2RML_MAIN_KEY_EXISTS (?ts, ?to, ?tn, 0)))\n ?triplesmap a rr:TriplesMap ; rr:logicalTable ?lt .\n { ?triplesmap rr:subjectMap [ rr:graphMap ?fldmap ] }\n union\n { ?triplesmap rr:predicateObjectMap [ rr:graphMap ?fldmap ] }\n union\n { ?triplesmap rr:subjectMap ?fldmap }\n union\n { ?triplesmap rr:predicateObjectMap [ rr:predicateMap ?fldmap ] }\n union\n { ?triplesmap rr:predicateObjectMap [ rr:objectMap ?fldmap ] }\n ?fldmap rr:column ?col\n filter (bif:isnull (sql:R2RML_KEY_COLUMN_EXISTS (?ts, ?to, ?tn, ?col, 0))) }" . . "1"^^ . .