Here's something i've been using for quite a while: 
sub make_select_query {
    my ($table, $select_fields, $conditions) = @_;

    my $query = "SELECT ";

    if ( defined $select_fields ) {
        if ( ref($select_array) eq "ARRAY" ) {
            $query .= join ",", @$select_array;
        }
        else {
            $query .= $select_fields;
        }
    }
    else {
        $query .= "\*";
    }

    $query .= " FROM " . $table;

    # only put the where and conditions in the query string
    # if conditions are present
    if (keys %$conditions) {
        $query .=  " WHERE ";

        foreach my $key (keys %$conditions) {
            push @conds, $key . "=\'" . $conditions->{$key} . "\'";
        }
    }
    $query .= join " and ", @conds;

    return $query;
}

[download]
Of course this has a number of shortcomings, such as:
All conditions use equality. This could be worked around by having a condition hash like this instead: 
    ...
    $condtions = {
        "age"   =>   " >= 21 ",
        "sex"   =>   " = female ",
    };

[download]

But this is leading down the path that the more complicated your need, the less likely there will be a general solution that does exactly what you need.

In reply to Re: Code factory by shemp
in thread Code factory by Notromda

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.