"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 join. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend