From: Tom Lane <tgl@sss.pgh.pa.us>
To: Rich Shepard <rshepard@appl-ecosys.com>
cc: pgsql-general@postgresql.org
Subject: Re: Not seeing script error
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References: <72d71614-3fa0-1a27-c271-a83ee759941a@appl-ecosys.com>
Comments: In-reply-to Rich Shepard <rshepard@appl-ecosys.com>
	message dated "Thu, 08 Jan 2026 08:43:23 -0800"
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Date: Thu, 08 Jan 2026 11:48:47 -0500
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Rich Shepard <rshepard@appl-ecosys.com> writes:
> The script:
> select p.person_nbr, p.fname, p.lname, p.job_title, p.direct_phone, p.email,
>         c.company_nbr, c.company_name, c.industry
> from people as p
> inner join companies as c on p.company_nbr = c.company_nbr
> where p.email is not null and
> industry = 'Chemicals' or
> industry = 'Energy' or
> industry = 'Food processor' or
> industry = 'Manufacturing' or
> industry = 'Maritime' or
> industry = 'Transportation' or
> industry = 'Wood products'
> group by p.person_nbr, c.company_nbr
> order by p.person_nbr;

> The where condition, `p.email is not null' is not working; the results
> include rows where email is null while all other columns are okay.

> I had that condition following the industry conditions but that makes no
> difference.

> What have I missed?

AND binds more tightly than OR.  I think you meant

where p.email is not null and
(industry = 'Chemicals' or
industry = 'Energy' or
industry = 'Food processor' or
industry = 'Manufacturing' or
industry = 'Maritime' or
industry = 'Transportation' or
industry = 'Wood products')

BTW, using IN might make this more compact.

			regards, tom lane