"Ara Anjargolian" <[EMAIL PROTECTED]> writes:
> jargol=# explain select user_id, first_names, last_name from articles, users
> where article_id = 5027 and (articles.author_id1 = users.user_id or
> articles.author_id2 = users.user_id);

> Why does it think it MUST do a seq-scan in the second case?

There's no support for generating an OR indexscan in the context of a

                        regards, tom lane

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TIP 8: explain analyze is your friend

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