I don't think that checks the database at all. "in_storage tells us whether the Row object is in the database or not. This is set when fetching data, and when we insert a new row."

Update: Confirmed: 

sub in_storage {
  my ($self, $val) = @_;
  $self->{_in_storage} = $val if @_ > 1;
  return $self->{_in_storage} ? 1 : 0;
}

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In reply to Re^2: how to tell if ->insert succeeded in DBIx::Class? by ikegami
in thread how to tell if ->insert succeeded in DBIx::Class? by perl5ever

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