Which database ?. This is for MySQL. Note user must have the correct permissions to create functions. The function is simply a demo, obviously you don't need a function to concat something to a field.

#!perl
use strict; 
use warnings; 
use DBI; 
use Data::Dump 'pp';

my $dbh = get_dbh();

my $proc = "
  CREATE FUNCTION my_subrt(s CHAR(30))
    RETURNS CHAR(50)
    RETURN CONCAT(s,'####');
  ";
$dbh->do('DROP FUNCTION IF EXISTS my_subrt'); 
$dbh->do($proc); 
#$dbh->do('DELETE FROM TABLE2'); 
my $sql = '
  INSERT INTO TABLE2 (COLUMN1, COLUMN2, COLUMN3)
  SELECT COLUMN1, COLUMN2, my_subrt(COLUMN3)
  FROM TABLE1 
  WHERE COLUMN4=?';
my $rv  = $dbh->do($sql, {}, 'foo');

my $ar = $dbh->selectall_arrayref('SELECT * FROM TABLE2');
pp $ar;

$dbh->do('DROP FUNCTION my_subrt'); 

sub get_dbh{
  my $database = "test"; my $user = ""; my $pw = "";
  my $dsn = "dbi:mysql:$database:localhost:3306"; 
  my $dbh = DBI->connect($dsn, $user, $pw, { 
         RaiseError=>1, AutoCommit=>1 } );
  return $dbh;
}

[download]
poj

In reply to Re: Interpolating subroutine call in SQL INSERT INTO SELECT statement by poj
in thread Interpolating subroutine call in SQL INSERT INTO SELECT statement by shadowsong

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.