问题
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?
回答1:
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
回答2:
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