Invalid Use of Null after editing query SQL
Posted on 2011-03-15
Whenever I resort to editing or even just viewing a query in SQL I can no longer open the query. I will get an error message 'Invalid Use of Null'. There are no null values in the dataset. The query will work OK until such time as I look at the SQL. Once I have done that I cannot open the query in any way, not even in Design View. It will always return the same error. Yet I can export the query and see the recordset returned in, for example, Excel.
What can be causing this problem?