Solved

Retrieving data from a database

Posted on 2001-06-27
4
149 Views
Last Modified: 2010-03-05
Hi,

So far I use the code described below to retrieve the data from a database :
   $base->get_result(\%result);
   
   foreach $row (@{$result{data}}) {
      $ligne = "$row->[0],$row->[1],$row->[2],$row->[3],$row->[4],";
      $ligne .= "$row->[5],$row->[6],$row->[7],$row->[8],$row->[9],";
      $ligne .= "$row->[10],$row->[11],$row->[12],$row->[13],$row->[14],";
      $ligne .= "$row->[15],$row->[16],$row->[17],$row->[18],$row->[19],";
      $ligne .= "$row->[20]";
   ...

But now I want to be more flexible and I want to make a loop such as :
   foreach $token ($row) {
    ...

Therefore I don't have to manage explicitly the number of columns of the query.

Thanks in advance
0
Comment
Question by:Richard Coffre
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 

Expert Comment

by:swonge
ID: 6232009
Hi,
   try following code:
-----------------------------------------------------------
use DBI;
use DBI qw(:sql_types);

sub DBOp {
     my ($dbConn, $query) = (@_);
     $rst = $dbConn->prepare("$query") || &DBErrorRewind($ERRORCODE{"ErrorSQLPrepare"},"getWarning\@parseWarnings.pl",$dbh->errstr(), "$query", $fileName, $Error);    
     $rst->execute() || &DBErrorRewind($ERRORCODE{"ErrorSQLExec"},"getWarning\@parseWarnings.pl",$rst->errstr(), $query, $fileName, $Error);
     return $rst;
}

$query = "select * from db_table";
$rst1 = DBOp($dbConn, $query);

while (@data = $rst1->fetchrow_array()) {
   $val1 = $data[0];
   $val2 = $data[1];
   $val3 = $data[2];
   
   print "val1: $val1 \t val2: $val2 \t val3: $val3\n";
}

----------------------------------------------------------
Hope this help =)


0
 
LVL 3

Accepted Solution

by:
interiot earned 50 total points
ID: 6232030
 $base->get_result(\%result);
 
  foreach $row (@{$result{data}}) {
     my $ligne = '';
     foreach $token (@$row) {
        $ligne .= ", $token";
     }
     print $ligne;
  }


Or, perhaps more succinctly:

  $base->get_result(\%result);

  foreach $row (@{$result{data}}) {
     my $ligne = join(', ', @$row);
     print $ligne;
  }
0
 
LVL 1

Author Comment

by:Richard Coffre
ID: 6234019
The answer didn't follow the programming methodology I use.
0
 
LVL 1

Author Comment

by:Richard Coffre
ID: 6234022
It's exactly what I want easy, simple, short ...

Thanks a lot
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Existing perl code to be changed for ftp to sftp handling 14 264
Bash one liner, start and end time calculation 13 126
iSeries PERL Scripts 7 207
Perl Awk Need Help 3 150
Many time we need to work with multiple files all together. If its windows system then we can use some GUI based editor to accomplish our task. But what if you are on putty or have only CLI(Command Line Interface) as an option to  edit your files. I…
A year or so back I was asked to have a play with MongoDB; within half an hour I had downloaded (http://www.mongodb.org/downloads),  installed and started the daemon, and had a console window open. After an hour or two of playing at the command …
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question