$share_hash{$fields[$colhash{res_stay_id}]} = [@fields];
This fills the %share_hash hash. 
foreach my $share_item (keys %$share_hash) {
 my $row = $share_hash->{$share_item};

[download]
This tries to work with $share_hash scalar variable (which is different from %share_hash) as a hash reference and should probably trow some errors/warnings.
Use keys %share_hash and $share_hash{$share_item} instead.
Sorry if my advice was wrong.

In reply to Re: hashes hash refs and arrays by aitap
in thread hashes hash refs and arrays by brcjacks

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