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Editorial Team
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Asked: 2026-05-22T19:48:32+00:00

I have an Oracle database with data in French language. My users mentionned that

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I have an Oracle database with data in French language.

My users mentionned that they would like to be able to find data, regardless of accents on characters, so words like:

  • École could be found by typing Ecole or École
  • Père-Noël could be found by typing Pere-Noel or Père-Noel or Père-Noël

Since this is a search that will be made on many columns and on tables with many rows, that there are many characters which can have accents in French, I would like to have an efficient way to match accentuated characters with unnaccentuated version.

Does Oracle provide any facility for this and if not, what solutions are available to do so ?

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1 Answer

  1. Editorial Team

    Check the documentation for Oracle fulltext indices (Oracle Text) – essentially, you’ll want to create your own lexer for this.

    To create a simple fulltext index:

    create index fulltext_idx on tab(col) indextype is ctxsys.context;

    UPDATE: Using the auto_lexer might also be an option (since it supports French), see
    http://download.oracle.com/docs/cd/B28359_01/text.111/b28304/cdatadic.htm#BHCGJHDH

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