#!/usr/bin/perl
use DBI;

# Set database variables here, and connect to the database.
my $dsn = "DBI:mysql:Torah;host=127.0.0.1";
my $user = "root";
my $pass = "";
$dbh = DBI->connect($dsn, $user, $pass,{ RaiseError => 1})
 or die "Could not connect to database! $DBI::errstr";

# Select things based on criteria and get them into variables
my $torahrecord = $dbh->prepare("select id,book,chapter,verse from Torah where book='Genesis'")
     or die "Couldn't prepare statement: " . $dbh->errstr;
  $torahrecord->execute()             # Execute the query
     or die "Couldn't execute statement: " . $sth->errstr;
while (@TSEL = $torahrecord->fetchrow_array()) {
    my $TORAHID = $TSEL[0];    # Record ID
    my $TORAHBOOK = $TSEL[1];  # Book
    my $TORAHCHAP = $TSEL[2];  # Chapter
    my $TORAHVER = $TSEL[3];   # Verse
    <define whatever else you want to look at here from available data.

   # Unrelated; shown for syntax. One-liner to select something from DB directly into a variable, no array loop needed
   $SOMEVAR = $dbh->selectrow_array("SELECT book from content where id='<something>'", undef, @params);
   
   # Logic; check the variables; do things to the new columns/existing. Put more in for more checks/sets
   if ($TORAHBOOK eq "Genesis") {
        $dbh->do("update content set newcolumn='<whatever>' where id='$TORAHID'");
   }
}

CREATE DATABASE Torah;
use Torah;
CREATE TABLE content (
        id      INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
        book    TEXT NOT NULL,
        chapter INT NOT NULL,
        `verse` INT NOT NULL,
        `wordnr`        INT NOT NULL,
        `word`  TEXT NOT NULL,
        `concordance`   TEXT NOT NULL,
        `translit`      TEXT NOT NULL,
        `strongs`       TEXT NOT NULL,
        `lemma` TEXT NOT NULL
);