Re: Weird DBI/Array Use

If I know that my query is going to return only one entry, how do I avoid using a loop to gather the returned data? Anything I try just returns me an array reference.

my $result = db_execute($SQL);
foreach(@$result){
    my ($title,$body) = @$_;
    print $title;
}
[download]

Thanks,
madhatter

Comment on Re: Weird DBI/Array Use Download Code

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Re: Re: Weird DBI/Array Use by Fastolfe (Vicar) on Jan 08, 2001 at 03:48 UTC
If you have an array reference that you "know" will only contain one item, then it sounds like you just want to access the first element of the array: `my $result = db_execute($SQL)->[0]; my ($title, $body) = @{$result}; # or my ($title, $body) = @{db_execute($SQL)->[0]};` [download] Check out perlref, perllol and especially perldsc for information about references and the ways you can use them.	[reply] [d/l]
Re: Re: Weird DBI/Array Use by repson (Chaplain) on Jan 08, 2001 at 08:21 UTC
If you only want one row then do use `my @result = $dbh->selectrow_array("SELECT MAX(foo) FROM blah");` If you just want one column then `my @rows = @{ $dbh->selectcol_arrayref("SELECT id FROM blah") };` Otherwise do a full `$dbh->selectall_arrayref` as salvadors suggests or use the full prepare, execute, fetchrow syntaxes like you were doing originally. For information on these syntaxes and more read up on the DBI docs.	[reply] [d/l] [select]


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