I tend to assemble my arguments to execute as I assemble my SQL statement. There are many ways to do it. The following might give you some ideas:

use strict;
use warnings;
use Data::Dumper;

update(10, {
    name    => 'test',
    value   => 'success',
});

sub update {
    my ($key, $params) = @_;

    my $sql = "update my_table set ";

    my @args;

    $sql .= join(
            ', ',
            map {
                push(@args, $params->{$_});
                "$_ = ?"
            } keys %$params
        );

    $sql .= " where key = ?";

    push(@args, $key);

    die Dumper([$sql, \@args]);

}

[download]

which gives a coordinated SQL statement and array of arguments for execute:

$VAR1 = [
          'update my_table set value = ?, name = ? where key = ?',
          [
            'success',
            'test',
            10
          ]
        ];

[download]

update: you should check the field names to avoid SQL injection. I typically qualify them against a list of known field names one way or another (grep a list, lookup in a hash, match a regular expression, etc.)

In reply to Re: DBI variable argument count by ig
in thread DBI variable argument count by anothersmurf

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