We assume that you also issued the "printall;" statement after the "select"
statement. Otherwise, you will not see anything printed.
The System Variables $maxrows is initially set to null. Null is not 0 (zero).
To set $maxrows to the initial value of null, you should set it to $null.
When $maxrows is set to a non-null value, the SELECT and FETCH statements stop
fetching data from the database when they reach the number of rows specified by
$maxrows. Setting $maxrows to 24, for example, yields a 24 rows of database
results without waiting for an entire query to complete. Setting it to 0 will
result in zero rows.