Base64 in SQLite?
System.Data.SQLite supports custom functions in .NET. If you're using a different wrapper that doesn't do this, then change the wrapper. The latest version is here:
http://system.data.sqlite.org/index.html/doc/trunk/www/downloads.wiki
It used to be here, but is now a part of the main SQLite project:
http://sqlite.phxsoftware.com/
Example:
[SQLiteFunction(Name = "Base64", Arguments = 1, FuncType = FunctionType.Scalar)]class Base64SQLite : SQLiteFunction{ public override object Invoke(object[] args) { // assumes args[0] is a string, but you can handle binary data too var bytes = Encoding.UTF8.GetBytes(Convert.ToString(args[0])); return Convert.ToBase64String(bytes); }}If you're going to be doing a lot of searches of this data, especially wildcard searches, then you're better off caching the data (use a trigger) and putting it into an FTS index.