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Asked: 2026-06-12T09:12:31+00:00

I’ve a table that includes a binary field (says bin) which contains 14 bytes

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I’ve a table that includes a binary field (says “bin”) which contains 14 bytes data. I want to do a search on this field as below:

from row in db.users where row.bin.SequenceEqual(data) select row

the type of “data” variable is byte[].
but when I run “q.Count()”, I encounter the following error:

LINQ to Entities does not recognize the method 'Boolean SequenceEqual[Byte]
(System.Collections.Generic.IEnumerable`1[System.Byte], 
System.Collections.Generic.IEnumerable`1[System.Byte])' method, 
and this method cannot be translated into a store expression.

How can I retrieve the count of matches binary data?

Thanks

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1 Answer

  1. Editorial Team

    If you own the data model, and your binary data is small fixed-size array of bytes, you can change the SQL data type from binary(14) to char(21), use Convert.ToBase64String on the way into the database, and Convert.FromBase64String on the way out.

    Switching to string will make your data searchable: simply encode your search data as base64 string, and use the == operator in the search condition.

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