Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Re^3: DBI Style Inquiry

by erix (Vicar)
on Jun 28, 2013 at 12:14 UTC ( #1041238=note: print w/ replies, xml ) Need Help??


in reply to Re^2: DBI Style Inquiry
in thread DBI Style Inquiry

I am surprised by the difference (even if it's small) between fetch and fetchrow_arrayref (your BC and DBC), as DBI docs say:

"fetchrow_arrayref" $ary_ref = $sth->fetchrow_arrayref; $ary_ref = $sth->fetch; # alias

Or is the essential difference something else?

(Also, it would be interesting to have the DBMS version-numbers on those pages; it does say 2006, that's a long time ago. I would say that (arguably, no doubt) PostgreSQL has advanced more than the others in performance in this particular period)


Comment on Re^3: DBI Style Inquiry
Download Code
Re^4: DBI Style Inquiry
by Tux (Monsignor) on Jun 28, 2013 at 12:42 UTC

    The difference between BC and DBC is the method-call overhead. If you really want to squeze out nonoseconds per call, it matters. It is not something I would propagate in use though:

    Create table 5000 x 12 Dbindcol 660153.156 recs/sec 4.8 x faster DBC bindcol 633472.697 recs/sec 4.6 x faster BC Darrayref 563380.282 recs/sec 4.1 x faster DAR arrayref 525486.075 recs/sec 3.8 x faster AR array 227086.929 recs/sec 1.7 x faster A hashref 136836.344 recs/sec HR

    Enjoy, Have FUN! H.Merijn

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1041238]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others surveying the Monastery: (4)
As of 2015-07-06 03:41 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (70 votes), past polls