Amer Neely wrote:
Daniel Kasak wrote:
Amer Neely wrote:
I'm writing a perl script in which I need to save some session data.
My first attempt is to use a temporary table to store some data.
However, I'm a little unclear as to the lifespan of the temporary
table. My understanding is they last until the session ends, or a
DELETE TABLE is issued. My question is 'what is a session'?
For example, in my perl script I create and populate the table in one
subroutine, but need to access it from another in the same script.
But it doesn't appear to live through the transition from one
subroutine to another.
Anyone have an idea whether this can even be done, or does calling
another subroutine end the 'session', thus killing the table?
Session isn't exactly the right word for it. The temporary tables hang
around for the lifetime of the database connection. So if you open a
database connection, make a tmp table, close the DB connection, and
open another one ( inside the same subroutine ), your tmp table will
be gone. Also, if you open 2 DB connections, and make a tmp table from
one, the other connection can't see it. So just keep your DB
connection ( or database handle in Perl speak ) live and you should be
able to see the table.
OK, that makes sense. As far as I know, my connection is still live - I
don't do a disconnect anywhere. So I'm still not sure why I can't pull
the data back out. I do get an error telling me about a problem with my
statement near .... which is where it tries to execute the FROM command.
My apologies, I'm not on the computer that I am developing this script
on, so can't give you the exact error.
I'm naming the table from a purchase order number, and as far as I can
tell, the table I try to read from is the same as the one I created -
but I get nothing out of it.
--
Amer Neely
w: www.softouch.on.ca/
b: www.softouch.on.ca/blog/
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