in reply to Re^3: fetchrow_array
in thread fetchrow_array
bind_columns is binding columns ;), seriously though: NAME_lc are the lower case column names from the database, region and sales in this case, and these are in an array ref which is used as the keys for %row (using a hash slice). The reason it uses bind_columns is that it processes the columns one by one (allowing you to have a normal hash not a hash of an array). So it's doing something like this:
$sth->bind_columns( \( @row{ @{$sth->{NAME_lc} } } )); # NAME_lc = lower case column name # so it's equal to \@row{\@region} (and \@row{\@sales}) # binds \$row{region} much as it would \$region while($sth->fetch) { # sets $row{region} with region's data # does same with sales print "$row{region}, $row{sales}\n"; # since this is rebinded each time %row is overwritten }
I hope this helps
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