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Lower scores also output with HANA Fuzzy Search


I am developing in HANA and trying thiings out with the CONTAINS predicate.

In order to make all things work I defined a full text index on the requested column - this is a NVARCHAR in our secondary database.

If I execute the SQL below, I also get results with a score lower than 1.0. If I replace the FUZZY with EXACT, I get exactly the same effect.


distinct score() as score,


from z_estri

where contains( ident,

'ethylene' ,

fuzzy( 1.0 , 'textsearch=compare' ) )

order by score desc,


We want the perfect matches as output, but " WHERE IDENT = 'ethylene' " does not work, because some records might contain uppercases and in this case the CONTAINS returns them all with a perfect score.

If I use FUZZY( 0.9 ) I also get the lower scores in my result.

Can anyone tell me how I can get the correct result.

Thanks a lot.


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  • author's profile photo Former Member
    Former Member
    Posted on Aug 28, 2015 at 12:47 PM

    Well, I can't offer an answer to your question, but perhaps a workaround for your problem.

    If you need all occurrences of 'ethylene', no matter which case, the classical approach will be:

    WHERE LOWER(IDENT) = 'ethylene'


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