I’m trying to create the export tool for construct queries (for a large amount 
of data, up to 100M triples).
isql-v exec="set blobs on; sparql define output-format \"TURTLE\" CONSTRUCT { 
?a ?b ?c. } WHERE { ?a ?b ?c. FILTER(isLiteral(?c)) }" > $TTL_PATH;
Returns  Error 22023: [Virtuoso Driver][Virtuoso Server]SR…: The result vector 
is too large .
Without output format “TURTLE” it works fine, but I have no quotes, language, 
datatype, angle brackets for URIs.
In general, I need TURTLE format, or some another format, or some another way, 
which works with a cursor
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