Basically, FILESTREAM is not supported on Azure SQL Db. So, you can go for some alternatives to it.
Firstly, Store your whole content into in-db VARBINARY(MAX) column, this will increase your db size. and Secondly, Store your content on azure blob storage and keep the paths/url in the table, so that you can directly access blob storage via paths/url.
I hope this will work.
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