Chris,
>select count(distinct uid) as c
>from aptg_guides_restricted as r, aptg_guides as g
...<snip>...
See the extensive notes on comma and SQL2003 joins at
http://dev.mysql.com/doc/refman/5.1/en/join.html.
Lose the comma join, make it a SQL2003 (explicit inner) join.
PB
-----
At 15:56 +0200 25/4/06, Barry wrote:
And you don't see any misdone queries when you echo them, right?
Hope you checked that.
Hi Barry
I was wrong about its being a PHP issue: it's definitely a MySQL
error. I realised I hadn't handled the error in such a way that I
could see what it was, but now I have, so...
The full query, in all its hideousness (but prettied up a bit in the
formatting :-) ) is:
----------
select count(distinct uid) as c
from aptg_guides_restricted as r, aptg_guides as g
left join guides_biography as b on b.guide_id = r.uid
left join guides_interests as i on i.guide_id = r.uid
left join guides_tours as t on t.guide_id = r.uid
left join guides_walks as w on w.guide_id = r.uid
left join guides_lectures as l on l.guide_id = r.uid
where g.guide_uid = r.uid and show_on_web = '1' and
(b.biography like '%london%' or i.interests like '%london%' or t.tours
like '%london%' or w.walks like '%london%' or l.lectures like '%london%')
----------
and the error I get back is:
Unknown column 'r.uid' in 'on clause'
...but I can assure you there is definitely a 'uid' column in
aptg_guides_restricted. If I take out the 'r.' from those left joins
(there's no uid in any other table mentioned here) I get basically the
same error: Unknown column 'uid' in 'on clause'. And if I spell out
'aptg_guides_restricted.uid' in the joins I /still/ get the error:
Unknown column 'aptg_guides_restricted.uid' in 'on clause'
So what /is/ the problem here? I say again: this and /exactly/ this
worked perfectly in MySQL 3.23, so there's obviously some change in
syntax handling or whatever between versions.
In fact, this is a preliminary query to establish the total. If there
is a total, I then run this:
----------
select distinct uid, firstname, lastname, year_qualified,
other_qualifications, guide_driverguide, guide_photo_1
from aptg_guides_restricted as r, aptg_guides as g
left join guides_biography as b on b.guide_id = r.uid
left join guides_interests as i on i.guide_id = r.uid
left join guides_tours as t on t.guide_id = r.uid
left join guides_walks as w on w.guide_id = r.uid
left join guides_lectures as l on l.guide_id = r.uid
where g.guide_uid = r.uid and show_on_web = '1' and
(b.biography like '%london%' or i.interests like '%london%' or t.tours
like '%london%' or w.walks like '%london%' or l.lectures like '%london%')
order by from_unixtime(unix_timestamp(guide_last_updated)) *
(rand(1569933185) + ((length(guide_photo_1) > 1) / 3)) desc
----------
...and if I run that directly in the SQL window in phpMyAdmin, I get
the same error: Unknown column 'r.uid' in 'on clause'.
¿Qué?
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