SQL Server CE 3.5: ISNULL not supported

Working with SQL Server CE 3.5 I noticed that it does not support the ISNULL function. Instead you have to use the COALESCE function to achive the same thing.

The coalesce function can be used much in the same way as the isnull function. The coalesce function returns the first none-null value in the parameter list.

This will give you all the rows where some_id_field is not null and equals the @filtering_id parameter:

SELECT some_value WHERE COALESCE(some_id_field, -1) = @filtering_id;