Reply to Re: [PHP] Newbie LEFT JOIN question

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Posted by Robert Cummings on 03/09/05 08:46

This is the P H P list not the S Q L list. I mean really, your question
isn't even worded as a PHP question. Maybe if you add a few echos or a
variable here and there someone here might let it pass. But just asking
a plain old SQL question is not the purpose of the P H P list.

Cheers,
Rob.

On Wed, 2005-03-09 at 00:50, Jackson Linux wrote:
> Hi, all,
> I have three tables; 'cv', the main table, 'jobcat', a definition table
> and 'cvjobcats', an intersection table (for more detail see PS below).
>
> I'd like to join this all together to be able to make a headline
> consisting of the plain English description of the job category
> followed by all rows within cv which contain a reference to that job
> category
>
> I can follow this only to a point and that is where I ask for the
> List's help - does this even resemble the beginnings of what I want to
> accomplish? I've tried to comment as I go for my own sanity
>
>
> //Select columns from 'cv', whose 'category' references numbers
> //Select 'category' from 'jobcat' to translate the numbers to English
>
> "SELECT cv.cv_id,
> cv.category,
> dates,
> cv.job_title,
> cv.company,
> cv.job,
> jobcat.category
>
> FROM cv
> LEFT JOIN cvjobcats
> ON cvjobcats.cv=cv.cv_id //Let tables cv and jobcat understand each
> other.
>
> //This next bit I'm confused about
> LEFT JOIN jobcat
> ON jobcat.jobcat_id=cvjobcats.jobcat
> WHERE
> cvjobcats.jobcat='4'";
>
>
> Great. I'm now lost. Can anyone advise?
>
> Thanks in advance,
>
>
> PS:
> <far too much information>
> cv contains columns including an primary key ('cv_id') and a column
> called 'category' which refers to job categories by number.
>
> jobcat contains two fields: a primary key (jobcat_id) and a plain
> english description
>
> cvjobcat contains two key columns: 'cv_id' and 'jobcat_id'.
> </far too much information>
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