On 04/05/11 9:40 AM, Merlin Moncure wrote:
> On Mon, Apr 4, 2011 at 2:20 PM, John R Pierce<pierce@hogranch.com> wrote:
>> I only used a few of those adjectives, and prefixed them by hypothetical.
>> to be honest, I would expect most languages commonly used in web service
>> environments to be more efficient at string processing than pl/pgsql, and I
>> really can't think of a counterexample off the top of my head.
> most language *are* more efficient at string processing but that's not
> the whole story, since to get at that benefit you typically have to:
>
> 1. application makes query to get the data
> 2. database searches for data, converts it to wire format and sends it
> through protocol to libpq
> 3. libpq wrapper converts it to language native string (unless you are in C)
> 4. language string processing takes place
> 5. data is re-stacked into queries and sent back to the database over
> wire format via protocol
> 6. database writes it out
in the OP's case, he was asking about strings he was inserting into
postgres, currently he was inserting them as a single long field, but he
wanted to break them up into multiple fields. So, he could send the
long string to a pgsql function that did the dicing up, or he could dice
up the string first then send the pieces to fields of a database. I
was expressing the opinion that its highly likely the 2nd solution would
work better, and I guess my bit of misplaced humor clouded that message.
