Why am I getting “Enter Parameter Value”?

Question

I'm trying to list all publishers with one book on the database.

Query:

SELECT Publisher
FROM book
GROUP BY Publisher
HAVING COUNT(book) = 1;

Answer 1

My guess is the problem is here ...

HAVING COUNT(book) = 1

The table is named book . Unless that table also includes a field named book , Access will be confused.

If you want to see Publisher which have only one row, use this ...

SELECT Publisher
FROM book
GROUP BY Publisher
HAVING COUNT(*) = 1;