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I have a database consisting of documents with Turkish characters ("ı, ö, ğ, ü, ö, ş, ç") with text index in Mongo 3.6. I have created my index to support the Turkish language with, 

db.myCollection.createIndex(

    { myField: "text" },

    { default_language: "turkish" }
).

However, when I am trying to perform a text search on myField, the index appears to be distinguishing between some but not all characters that contain diacritical marks and their non-marked counterpart. For instance, it does not distinguish between 'ö' and 'o' but it does between 'ı' and 'i'.

My goal in performing the text search is to lookup names in the database and due to the text search not functioning as I had assumed, the following query:

db.myCollection.find(

    { $text: { $search: "kanik" } }

)

does not return the document, {myField: "Kanık"}.

Any ideas how I might fix this or circumvent this issue?

Kaan Dönbekci
  • 71
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  • It seems that MongoDB 3.6 text indexing does not support diacritics. Check [the documentation](https://docs.mongodb.com/manual/core/index-text/index.html#diacritic-insensitivity). – Andriy Simonov Dec 21 '17 at 11:46

0 Answers0