Somewhat tangential, but for whatever it is worth I agree with the
view expressed at
http://weblogs.sqlteam.com/jeffs/archive/2008/02/13/on-right-outer-joins.aspx:
Right joins should be avoided (IMHO).
> Anything to add or correct, please?
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Rob Wultsch
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MySQL General Mailing List
For lis
That sounds like the technical answer. I prefer an analogy a 5th
grader could understand. If you have 2 overlapping circles, and inner
join is the area that overlaps. A left/outer join is the all of the
left circle plus the content of the right circle that overlaps. A
right/outer join is ju
I'm trying to understand the terminology a bit.
A left or right join can only exist for an outer join. For an inner
join, the terminology would be out of context because inner joins are
symmetrical (whereas outer joins are asymmetrical).
Would this be a correct understanding? Anything to add
John,
Union the 2 together.
select r.room_num, count(p.peopid)
from rooms r
left join people p on r.roomid=p.roomid1
group by r.room_num
UNION
select r.room_num, count(p.peopid)
from rooms r
right join people p on r.roomid=p.roomid1
group by r.room_num
or something like that. Should give you 2
I need to write a query that essentially does both a left and right join. I
have a list of people and the rooms they occupy. Some rooms have no people.
Some people have no room assigned.
This gives me a list of rooms and how many people are in each room
including any rooms with nobody in th
Try:
select t1.player,t1.game,t1.points,t1.ppg,t2.team as team_name
from sc_scoreleaders as t1
left join sc_seasonstanding as t2 ON t1.team=t2.id
You don't need to join sc_scoreleaders 2 times...
Better:
select t1.player,t1.game,t1.points,t1.ppg,
ifnull(t2.team,"No Team") as team_name
So, it's been a while since I've actaully needed to do this
and I can not for the life of me figure this out, maybe it's
because I've been working for nine hours w/o getting up.
Here it is:
I have two tables, one table holds Team information, the
other table holds top scorers. However, sometimes
