Hi All,

I have a perl code which talks to ORACLE VIEW to fetch a record.

It works fine if I do not use place holders (prepare statement) If I use placeholder then its giving empty result.

But If I query to ORACLE TABLE using place holders it works fine...

Why Perl DBI shows different behaviour for TABLE and different behaviour for VIEW while using place holder?

Is it a Bug? or We cant use place holder for VIEW? or I am doing anything wrong?

Here I am sending perl code with place holder and without place holder..

Please suggest me..

Code without place holder : works fine 

#!/usr/bin/perl

BEGIN {
    unless($ENV{BEGIN_BLOCK}){
        $ENV{ORACLE_HOME} = "/opt/instantclient_10_2/";
        $ENV{LD_LIBRARY_PATH} = "/opt/instantclient_10_2/";
        $ENV{BEGIN_BLOCK} = 1;
        exec 'env', $^X, $0, @ARGV;
    }
}

use DBI;


$CBMSHOST = "host";
$CBMSDB = "db";
$CBMSUSER = "user";
$CBMSPWD = "pwd";


$scode ="'1640039'";


$db = DBI->connect("DBI:Oracle:host=$CBMSHOST;sid=$CBMSDB",$CBMSUSER,$
+CBMSPWD);
    unless($db) {
      print "(ERROR) Failed to connect to $CBMSHOST.";
      exit(1);
      }
 
  print " ( INFO ) Fetching info for user $scode ";

  my $sql = qq{ SELECT KIHON3 FROM CBMSCP.VIEWCTC_FORMI1 WHERE KIHON1 
+= $scode };
  my $sth = $db->prepare( $sql );
 
  #$sth->bind_param(1,$scode);
  

  unless($sth)
    {
      print " ( ERROR ) Query preparation failed for user $scode  ";

    }
  
 
  unless($sth->execute())
    {
      print " ( ERROR ) Fetching info failed for user $scode ";
     
    }

  my $row;
  while ( $row = $sth->fetchrow_array()) {
     
      if($row)
      {
             print  $row;
      }
      else
      {
            print "NO";
      }
  }
  $sth->finish();
  $db->disconnect();
  exit(0);

[download]

2. Code with Place holder : no error but no result 

#!/usr/bin/perl

BEGIN {
    unless($ENV{BEGIN_BLOCK}){
        $ENV{ORACLE_HOME} = "/opt/instantclient_10_2/";
        $ENV{LD_LIBRARY_PATH} = "/opt/instantclient_10_2/";
        $ENV{BEGIN_BLOCK} = 1;
        exec 'env', $^X, $0, @ARGV;
    }
}

use DBI;


$CBMSHOST = "host";
$CBMSDB = "db";
$CBMSUSER = "user";
$CBMSPWD = "pwd";


$scode ="'1640039'";


$db = DBI->connect("DBI:Oracle:host=$CBMSHOST;sid=$CBMSDB",$CBMSUSER,$
+CBMSPWD);
    unless($db) {
      print "(ERROR) Failed to connect to $CBMSHOST.";
      exit(1);
      }
 
  print " ( INFO ) Fetching info for user $scode ";

  my $sql = qq{ SELECT KIHON3 FROM CBMSCP.VIEWCTC_FORMI1 WHERE KIHON1 
+= ? };
  my $sth = $db->prepare( $sql );
 
  
  

  unless($sth)
    {
      print " ( ERROR ) Query preparation failed for user $scode  ";

    }
  $sth->bind_param(1,$scode);
 
  unless($sth->execute())
    {
      print " ( ERROR ) Fetching info failed for user $scode ";
     
    }

  my $row;
  while ( $row = $sth->fetchrow_array()) {
     
      if($row)
      {
             print  $row;
      }
      else
      {
            print "NO";
      }
  }
  $sth->finish();
  $db->disconnect();
  exit(0);

[download]

Thanks
Sri

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In reply to DBI : Strange Behaviour by srini_sun

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