I have written a function that I for example invoke like so:

myfunction($id, { max => 90, cval => 89 });

The Dumper output of the resulting hash ends up something like the following:

$VAR1 = {
          'D96C3A4B' => {
                          'cval' => '90',
                          'max' => '92'
                        },
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However, when I then store and retrieve these values from a little SQL database using selectall_hashref($sql, [ 'id','key']) they become:

'1C8962EB' => {
                          'cval' => {
                                       'value' => '90',
                                       'id' => '1C8962EB',
                                       'key' => 'cval'
                                     },
                          'max' => {
                                     'value' => '92',
                                     'id' => '1C8962EB',
                                     'key' => 'max'
                                   }
                        }
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The table in question is simple, being created something like 'CREATE TABLE evkeypairs (id INT,key TEXT,value TEXT);'

Is it possible to craft or map the select in such a way so as to not insert the literal SQL column names similar to the format I use when calling myfunction()? Else, the many calls I will need to make to myfunction() will become tedious.

I would like (if at all possible) to avoid making any copies of the hash so as to avoid memory overhead.

Niel