Hi,
I want to do fast exact string match for hundreds of millions of text
strings. sparql filter regex is apparently too slow. I found bif:contains
is very fast, and in virtuoso 7 we do not need to do anything after
installation, bif:contains works well. However, bif:contains only does
substring match, so most of time I got many hits back.
I am wondering how I can do very fast exact string match with
case-insensitive. I have searched for other bif functions, there are a
couple of them: bif:strstr, bif:strcasestr, bif:starts_with, bif:ends_with.
However, none of them work after initial installation of virtuoso 7. Do I
need to run the store procedure as follows to get them work?
Best,
Gang
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DB.DBA.RDF_OBJ_FT_RULE_ADD (null, null, 'All');
DB.DBA.VT_INC_INDEX_DB_DBA_RDF_OBJ ();
DB.DBA.VT_INDEX_DB_DBA_RDF_OBJ ();
------------------------------------------------------------------------------
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