Keys of a hash are not returned in any particular order.   Try

    # get column names
    foreach $col (sort keys %{$ref}){
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to get your keys in alpha sorted order.   If you want them in another order, you will have to create an array to define the order you want and do something like

    # get column names
    my @col_order = qw( Condition  Cshift );
    foreach $col (@col_order){
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but then you might run into problems with getting the casing of your names correct.

What you _really_ want to do is find out the order of your fields directly from the DB and   ...   I don't remember how to do that just now. :-(   Check the docs and you'll find it I'm sure.