finhagen has asked for the wisdom of the Perl Monks concerning the following question:

I have a script which queries a mysql 5.5 database which is working well. However, the output is more rigid than I would like - my output is informing a Spreadsheet::WriteExcel based report. What I would like is to assign each member of each row a variable so I can place the data in the spreadsheet cell of my choosing. Here's the code snippet I am using: 
######################################################################
+#############
#
# Account Contacts Tab
#  
use strict;
use warnings;
use DBI;
use DBD::mysql;
use Spreadsheet::WriteExcel;

our $acnse;
our $emc;

my $worksheet1 = $workbook->add_worksheet('Contacts');

my $acnse = $dbh->prepare("SELECT a.`function`, b.`fname`,b.`lname`, b
+.`email`, b.`ophone`, b.`mobile`, b.`loffice` FROM `acct` a, `acnse` 
+b WHERE a.`cid` ='BBYPRD' AND a.`eid` = b.`eid` order by function;");
$acnse->execute or die $acnse->errstr;

my $row = 7;
my $col = 1;

$worksheet1->write_row($row++,$col,['Role','First Name','Last Name','E
+mail', 'Office Phone', 'Cell', 'Office'], $format_body1);

while(my @data = $acnse ->fetchrow_array)

{
 $worksheet1->write_row($row++,$col,\@data);
}


    $worksheet1->set_column(6, 2, 15);
    $worksheet1->set_column(6, 3, 15);
    $worksheet1->set_column(6, 4, 30);
    $worksheet1->set_column(6, 5, 20);
    $worksheet1->set_column(6, 6, 20);
    $worksheet1->set_column(6, 7, 25);

    
my $emc = $dbh->prepare("SELECT a.`function`, b.`fname`, b.`lname`, b.
+`email`, b.`ophone`, b.`cphone`, b.`geo` FROM `acct` a, `emc` b WHERE
+ a.`cid` ='BBYPRD' AND b.`eid` = a.`eid` order by function;");
$emc->execute or die $emc->errstr;

    my $row = 21;
    my $col = 1;

    $worksheet1->write_row($row++,$col,['Role','First Name','Last Name
+','Email', 'Office Phone', 'Cell', 'Office'], $format_body1);

    while(my @data = $emc ->fetchrow_array)

    {
     $worksheet1->write_row($row++,$col,\@data);
    }



        $worksheet1->write (0, 0, $acct,  $format_title);
        $worksheet1->write (0, 7,  $ymd, $format_body);
        $worksheet1->write (1, 0, 'Contact Report',  $format_title3);
        
        $worksheet1->write (5, 0, 'Accenture Contacts', $format_title3
+);

        
        $worksheet1->write (20, 0, 'EMC Contacts', $format_title3);

[download]
That works but the output includes the column header information and iterates one row at a time: 

Contacts                            
                            
    Role    First Name    Last Name    Email    Office Phone    Cell  
+  Office
    ***    xxxxx    xxxxx    xxxxxx    999-999-9999        Somwhere
    ***    xxxxx    xxxxx    xxxxxx    999-999-9999        Somwhere
    ***    xxxxx    xxxxx    xxxxxx    999-999-9999        Somwhere
    ***    xxxxx    xxxxx    xxxxxx    999-999-9999        Somwhere
    ***    xxxxx    xxxxx    xxxxxx    999-999-9999        Somwhere

[download]
I would prefer to capture the output into an array and use the array_name[0] to identify the output members and write them to the spreadsheet with Spreadsheet::WriteExcel format strings. Thanks in advance for your wisdom.
Hagen Finley Boulder, CO

Replies are listed 'Best First'.
Re: mysql DBI Queries to variables
by space_monk (Chaplain) on Dec 12, 2012 at 15:48 UTC

    Isn't a simple way to map the data array to a new array in the order you want?

    my @reordered = @elements[1,2,0];

    [download]
    A Monk aims to give answers to those who have none, and to learn from those who know more.
[reply]
[d/l]
      Never mind - I found a code example from an old question I posted on this site which answers my question: 
       $sth= $dbh->prepare("select dedate,de,den,op,so,rep,customer,dealn,cc
+o,ebv,fcost,fmarg,bookad,tir,swmaint,hwmaint,svsums,svcost,svmarg,flo
+or
            from quote");                          

            $sth->execute();

            #capture output into array and variablize the results 
             while ( my $aref = $sth->fetchrow_arrayref )
            {
             my ($dedate,$de,$den,$op,$so,$rep,$customer,$dealn,$cco,$
+ebv,$fcost,$fmarg,$bookad,$tir,$swmaint,$hwmaint,$svsums,$svcost,$svm
+arg,$floor) = @$aref;

            #write data to spreadsheet row by row 
                $worksheet->write_date_time($row+2, 0, $dedate,$alignc
+d);
                $worksheet->write_number($row+2, 1, $de,$alignc);
                $worksheet->write_number($row+2, 2, $den,$alignc);
                $worksheet->write_number($row+2, 3, $op,$alignc);
                $worksheet->write_number($row+2, 4, $so,$alignc);
                $worksheet->write_string($row+2, 5, $rep,$alignl);
                $worksheet->write_string($row+2, 6, $customer,$alignl)
+;
                $worksheet->write_string($row+2, 7, $dealn,$alignl);
                $worksheet->write_number($row+2, 8, $cco,$alignld);
                 $worksheet->write_number($row+2, 9, $ebv,$alignld);
                $worksheet->write_number($row+2, 10, $fcost,$alignld);
                $worksheet->write_formula($row+2, 12, '=1-(K.($row+2)/
+J.($row+2))'

      [download]
      Thanks again for your kind assistance. Thank your for your reply. The goal isn't to reorder the elements in the array, it's to address the elements so I can place them in the spreadsheet cells wherever I please. However, to your point, since, in my script, the output of my query appears to be placed into the variable $emc and then added to the @data array, why can't I address the elements of the @data array as $data[0], $data1 and so forth?

      It would be helpful to understand more clearly what is happening to the output of the SQL query - how is perl variablizing that output?

      When I try addressing the data as $data[0], I get an error "Not an array ref in call to write_row() at ./AcntRptTest2.pl line 222". Line 222 is

       while(my @data = $emc ->fetchrow_array).

      My revised code which produces that error is: 

       my $emc = $dbh->prepare("SELECT a.`function`, b.`fname`, b.`lname`, b
+.`email`, b.`ophone`, b.`cphone`, b.`geo` FROM `acct` a, `emc` b WHER
+E a.`cid` ='BBYPRD' AND b.`eid` = a.`eid` order by function;");
$emc->execute or die $emc->errstr;

    my $row = 21;
    my $col = 1;

    $worksheet1->write_row($row++,$col,['Role','First Name','Last Name
+','Email', 'Office Phone', 'Cell', 'Office'], $format_body1);

    while(my @data = $emc ->fetchrow_array)

    {
     $worksheet1->write_row($row++,$col,$data[6],$data[5], $data[4],$d
+ata[3], $data[2], $data[1], $data[0]);
}

      [download]
      I'm sure my error is simple and probably obvious to the wise monks who toil for our benefit, so I appreciate your patient assistance.
      Hagen Finley Boulder, CO
[reply]
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