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 Help with Inner Join

Author  Topic 

sqlconfused
Yak Posting Veteran

50 Posts

Posted - 2013-07-10 : 00:36:43
Hello

Inner joins are like learning German... difficult.

I have a table named 'photos' which looks like this:



Every photo has an id, the filename (fname), dir, owner (person that uploaded the photo) and a description.

Now I'm trying to send out notifications when a new comment is left for the person's photo which involves pulling their email address and the field to determine if they want notifications sent out.

I now need to do this SQL as well:
select emailaddy, notify from userlist where username = 'clay70'

This will select the email address and notify value (yes/no) where username = (value of "owner" in the "photos" table) to see if the person wants a notification of new comment, and what email to send it to.

Basically something like this (and I know the SQL format is wrong wrong wrong):

select a.emailaddy, a.notify, b.fname, b.dir, b.owner, b.info from a.userlist b. photos where a.username = b.owner

I'm hoping you can see through my invalid SQL command and come up with what I'm looking for. I just need to join the username and owner from userlist and photos tables respectively.

Thank you :)

khtan
In (Som, Ni, Yak)

17689 Posts

Posted - 2013-07-10 : 02:40:42
[code]
select u.emailaddy, u.notify, p.fname, p.dir, p.owner, p.info
from photo p
inner join userlist u on p.owner = u.username
where p.id = 15506
[/code]


KH
[spoiler]Time is always against us[/spoiler]

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visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-07-10 : 03:00:53
do you've a comment date? how will you determine latest comments?

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sqlconfused
Yak Posting Veteran

50 Posts

Posted - 2013-07-11 : 16:30:35
quote:
Originally posted by visakh16

do you've a comment date? how will you determine latest comments?



Hello, yes I do. It is held in a separate table for comments. I just required some code to determine whether to send the notification.


quote:
Originally posted by khtan


select u.emailaddy, u.notify, p.fname, p.dir, p.owner, p.info
from photo p
inner join userlist u on p.owner = u.username
where p.id = 15506




Thank you, it worked perfectly!
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khtan
In (Som, Ni, Yak)

17689 Posts

Posted - 2013-07-12 : 00:22:51
you are welcome


KH
[spoiler]Time is always against us[/spoiler]

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