Sibling monks, I want to take a slice out of a hash %g by using an array of keys @cols. so I do my @vals = @g{@cols};. So far so good. BUT, I don't know what's in %g - it may have defined values for all fields, or it may not. What I want in @vals is the appropriate value from %g, or, if that value is not defined, I want some kind of placeholder, preferably undef but 0 or whatever wd be fine. I just need something, because when I've done my slicing I feed it to an SQL query thus: 
my $placeholders = '?,' x @cols;
chop $placeholders;
my $cols = join ',', @cols;
my $sth = $dbh->prepare("INSERT INTO venue ($cols) VALUES ($placeholde
+rs)") or die $dbh->errstr;
$sth->execute(@vals);

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So my question is (A) can I force a hash slice to have an element for every key I feed it? or (B) is there some other cute way to do what I want? Thanks, all.

§ George Sherston

2001-12-11 Edit by Corion : Fixed a </CODE> tag

In reply to Hash slice to get DB values - include undefined values? by George_Sherston

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