I need to store articles in an application for WP7. I just want to use a database so I can query by unread articles, etc, etc.
I've run into one big problem with SQL CE in Mango-- there seems to be a limit of 4000 characters, and my article is 4200. And that isn't even the biggest one.
How can I get around this limit, if at all? If not, will I have to use a different database or possibly just write stories to IsolatedStorage and manage the file references in the database?
The 4000 byte limit is imposed on varchar fields.
If you want more then you'll need ot use ntext.
See the list of supported types at http://msdn.microsoft.com/en-us/library/ms172424(SQL.110).aspx
In Sql Compact 3.5, there was an ntext data type that was not limited to 4k bytes (like nvarchar).
来源：https://stackoverflow.com/questions/6736881/sql-ce-max-length