"0"^^ . . . "select ?lt, (\"Warning\") as ?severity,\n (if (bif:isnotnull (sql:R2RML_MAIN_KEY_EXISTS (?ts, ?to, ?tn, 1)),\n bif:concat (\"rr:tableName refers to \", sql:R2RML_MAIN_KEY_EXISTS (?ts, ?to, ?tn, 1), \" as to \",\n bif:sprintf (\"%s.%s.%s\", bif:coalesce (?to, \"DB\"), bif:coalesce (?ts, \"DBA\"), ?tn),\n \", i.e., using wrong character case; adjust the R2RML or the table before generating an RDF View\" ),\n \"rr:tableName refers to table that does not exist; adjust the R2RML or create 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:isnull (sql:R2RML_MAIN_KEY_EXISTS (?ts, ?to, ?tn, 0))) }" . . "Name of a table or view" . "1"^^ .