fragment_downloaded_cb({"url":"performance.html#avoid-queries-with-unrestricted-predicates","fragment":"Avoid queries with unrestricted predicates\nQueries with unrestricted predicates are those like:\nThey involve lookups across all possible triples of\nan object, which roughly translates to a traversal\nthrough all tables and columns.\nThe most pathological case is:\nWhich does retrieve every triple existing in the store.\nQueries with unrestricted predicates are most useful to\nintrospect resources, or the triple store in its entirety.\nProduction code should do this in rare occasions.\n"});