Here is a direct quote from Programming the Perl DBI, Decartes and Bunce, O'Reilly, Page 223 Section fetchrow_arrayref.

'Note that the same array reference will currently be returned for each fetch, don't store reference and then use it after a later fetch'

In other words you are getting a shallow copy of row array instead of the deep copy you want/need. ( of course this what you have already discovered :( ).

Why not dereference rowarray_ref and simple store and array of arrarys. 

...
push(@entries, [ @$colunms_ref ]);
...

[download]

Update
'Holy Flatlander Chips' bwana147 caught a my baadddd very baddd deref causing column_ref flating out. I can't claim a typo on this one folks I just plain forgot :(. thx bwana147.

In addition after a short CB discussion with davorg we reach a consensus of two that this could all be resolved by simply using fetchrow_array and avoiding all his pesky derefencing.

mitd-Made in the Dark
'My favourite colour appears to be grey.'

In reply to Re: Multiple references pointing to the same memory location by mitd
in thread Multiple references pointing to the same memory location by ezekiel

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