Re: Uncertain about recoding prepared statements from MySQL to PostgreSQL

On Nov 2, 2007, at 8:13 PM, G. J. Walsh wrote:

> $query = "INSERT INTO testee
> (protocode,service,sample,normid,proctored)
> VALUES ($1,$2,$3,$4,$5)";
> $result = pg_prepare($cnx,"newtestee",$query);
> pg_execute($cnx,"newtestee",array($protocode,$service,$sample,$normid,
> $proctored));
>
> Have I got this synyax down correctly?

Looks correct to me.

>
> I presume the pg_execute provides the data type information (the
> 'sssss'
> in the MySQL bind-param???

I think the PHP interface sends everything as strings. In general it
just works, but suspect there are cases where you might have to
provide some explicit typing.

>
> I have modified another field (not shown above) as being type
> TIMESTAMP
> DEFAULT now(). I assume I would 'pass over' such fields were they to
> appear in the above example.
>
> In MySQL the '?' placeholder in the INSERT was replaced with:
> current_timestamp().

You would want to leave them out of the insert statement or use the
key word DEFAULT as the value. See the INSERT docs for more details
on this:

http://www.postgresql.org/docs/8.2/interactive/sql-insert.html

>
> Thanks for the 'steer'. A few more coversions and I will develop a
> rhythm of familiarity. For now, I want to avoid any bad habits and
> faulty thinking. Its much more difficult to UNlearn than it is to
> learn
> in the first place.

Here is a PHP class for calling PostgreSQL functions with prepared
statements which might be useful or instructive:

http://pgedit.com/resource/php/pgfuncall

John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL