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Asked: 2026-05-29T06:56:27+00:00

i googled around a bit about case insensitive search in apache derby. all google

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i googled around a bit about case insensitive search in apache derby. all google results are very old (2007 the latest). i found that is impossible to search case insensitive without loosing the index (“LOWER” don’t uses the index).

Is this still true? Or is there a way to get case insensitive search on indexed varchar/text columns?

thx in advance

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  1. Editorial Team

    Have a look at collation:

    You could use TERRITORY_BASED:SECONDARY` when creating the connector, this was the only way I was able to achieve this:

    TERRITORY_BASED:SECONDARY: Territory based with collation strength SECONDARY.
    SECONDARY typically means that differences in base letters or accents are
    considered significant, whereas differences in case are not considered
    significant.

    Example:

    jdbc:derby:MexicanDB;create=true;collation=TERRITORY_BASED:SECONDARY

    Apparently it is not possible in Derby to create an index over a function:
    https://issues.apache.org/jira/browse/DERBY-455

    Another possibility is to store the same value in a lower case column and search in that.

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