Обсуждение: Can you bind output variables?

Hello,

Can you use paramValues[] in either PQexecParams or PQexecPrepared to read 
data from the DB into the bound variables?

Or can you only bind input values? And all output must be read by iterating 
over rows and columns using PQgetvalue() ?

Thanks,
Mark, 

But the method that libpq has for returning data is, I believe, much
more friendly than other DBMS's.  Try using Oracle's SQLDA, it's a lot
more complicated.  Although once setup it works well.


Dick Goulet
Senior Oracle DBA
Oracle Certified 8i DBA
-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Tuesday, February 08, 2005 11:49 PM
To: mjc@comcast.net
Cc: pgsql-interfaces@postgresql.org
Subject: Re: [INTERFACES] Can you bind output variables?

mjc@comcast.net writes:
> Can you use paramValues[] in either PQexecParams or PQexecPrepared to
read
> data from the DB into the bound variables?

Nope, those are input values only.  Maybe you should be looking at ecpg
--- "bound variables" is an idea completely foreign to libpq.
        regards, tom lane

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