[nycphp-talk] comparing arrays to build query?
Kristina Anderson
ka at kacomputerconsulting.com
Sun Jun 8 14:25:23 EDT 2008
that's really really close to what I need ... except that I first have
to test for if Jobs.remzip is empty and if so, query on Employers.zip
instead.
This sounds like it might be a task for that Coalesce function we were
discussing a few months back?
As long as the array implodes before the client implodes, this might
work :) Thanks Mark
-- Kristina
> So you have an array of zips, like array(11201, 11206, 11301),
right?
> and you need to find all the jobs within that array of zips?
>
> If so your query would look something like this:
>
> mysql_query('SELECT * FROM Providers INNER JOIN Employers ON
Jobs.empid =
> Employers.EmpID WHERE Jobs.zip IN (' . implode(',', $aZips) . ')');
>
> Which becomes
> SELECT * FROM Providers INNER JOIN Employers ON Jobs.empid =
> Employers.EmpID WHERE Jobs.zip IN (11201,11206,11301)
>
> Not sure if that's what you're looking for.
>
> Mark
>
>
> Kristina Anderson wrote:
> > OK, this really has me flummoxed. I'm not sure if I'm going about
this
> > the right way.
> >
> > I have three tables, an Employer table, a Provider table and a Jobs
> > table. Each Provider (worker) has up to nine zip codes and a
possible
> > metro area which contains all the zip codes in their city which is
> > their "service area".
> >
> > When they log on, I need to display only the Jobs in any of their
zip
> > codes.
> >
> > In the Jobs table, there is a remote zip field (remzip) and if that
has
> > a value, that is the zip where the job is, otherwise we use the zip
> > field in the Employers table.
> >
> > I've built two arrays one by
> > "SELECT * FROM Providers INNER JOIN Employers ON Jobs.empid =
> > Employers.EmpID ";
> >
> > which gives me both the remzip and zip fields and the jobid field.
> >
> > And one by querying the database for all the zips in the service
area
> > of that particular Provider and dumping them all into an array.
> >
> > So now I have these two arrays I can compare...is there an easier
way
> > to do this or ... ?
> >
> > I need to compare these two arrays and if any value from array 2 is
in
> > array 1, pull out the entire row by jobid from the database and
display
> > it.
> >
> > Thanks in advance,
> > ---- Kristina
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