Re: Returned row count doesn't match lines in output file

"Tchouante, Merlin" <mtchouan@umaryland.edu> writes:
> I'm executing an .sql file which looks like this:

> \o /home/bbuser/banner/gradeload/sodorgusers.txt
> \t on
> select u.user_id||'|'||u.firstname||'|'||u.lastname||'|'||u.email||'|'||u.student_id
> from users u, course_main cm, course_users cu
> where cu.crsmain_pk1 = cm.pk1
> and cu.users_pk1 = u.pk1
> and cm.course_id = 'Org.dent.Training'
> order by u.lastname, u.firstname;
> \t off
> \o

> When I look at the output file, it has a bunch of blank lines in between the records but displays a line count of
4916. What is causing the blank lines? 

Null values in one or more of the columns you're concatenating, perhaps?
Concatenating a null with something else yields null.  (See
coalesce() for one ad-hoc way to fix that.)

            regards, tom lane