Is there a reason you are using Sybase::DBlib instead of the more usual DBI?
DBI has a handy selectcol_arrayref() function which folds a single-column resultset into an array reference.
sub sa_details {
my $dbh = ...
return $dbh->selectcol_arrayref(
qq{SELECT userid FROM user}
);
}
my $arrayref = sa_details();
(Usually you use DBI with the prepare-execute-fetch combination, though. The select{row,all,col} functions are there just for convenience.)
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