postgres column alias problem

Question

As a newbie to Postgresql (I\'m moving over because I\'m moving my site to heroku who only support it, I\'m having to refactor some of my queries and code. Here\'s a problem

Answer 1

You have:

order by l2.geopoint_id, l_user_id = l2.user_id desc

in your query. That's illegal syntax. Remove the = l2.user_id part (move it to where if that's one of the join conditions) and it should work.

Update Below select (with = l2.user_id removed) should work just fine. I've tested it (with different table / column names, obviously) on Postgres 8.3

select distinct 
       l2.*, 
       l.user_id as l_user_id, 
       l.geopoint_id as l_geopoint_id 
  from locations l 
  left join locations l2 on l.geopoint_id = l2.geopoint_id 
 where l.user_id = 8 
 order by l2.geopoint_id, l_user_id desc