Re: Is there a way to avoid hard coding database connection info into views?

[Merlin Moncure <mmoncure@xxxxxxxxx>]

On Tue, May 15, 2012 at 2:51 PM, Mike Christensen <mike@xxxxxxxxxxxxx> wrote:
> Thanks!
>
> I've never done that in PG before, but I've used named connections
> with Oracle.  Is it the same sort of deal?  There's a file on the disk
> somewhere with the connection info?  Either way, I'm sure it's a RTFM
> thing so I'll look into it.

yeah, there's a good example in the docs here:
http://www.postgresql.org/docs/9.1/static/contrib-dblink-connect.html

btw, if you have a structure in test that matches production, then you
can use a composite type trick to avoid  having to specify fields as
long as you keep those structures in sync (which you have to do
anyways). try:

select (u).* from dblink(
         'hostaddr=123.123.123.123 dbname=ProductionDB user=ROUser
password=secret',
         'select u from users u') as t1(u users);

it should work as long as users exists on both sides and has exactly
the same structure. using that method it's trivial to make a dblink
wrapper that could query any table but you couldn't wrap it into a
single view obviously.

merlin

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