SQL Server Compact Edition ISNULL(sth, ' ') returns a boolean value?

Question

I have an Accounts table with columns name, password and email. They are all type nvarchar. I wrote a query like

Answer 1

According this ISNULL is not implemented in SQL Server CE. I would expect to see a syntax error raised, however.

Workaround: you can use CASE WHEN email IS NULL THEN 'eeee' ELSE email END or COALESCE. Preferably the latter.

Also use parameterised queries. If you don't know why you should, learn.