Reply to Newbie LEFT JOIN question

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Posted by Jackson Linux on 03/09/05 07:50

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>

[Back to original message]


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