X-Git-Url: http://www.git.stargrave.org/?p=public-inbox.git;a=blobdiff_plain;f=lib%2FPublicInbox%2FMsgmap.pm;h=a49b61e8b7f3636eb28cba61ca052c5000b5720c;hp=3fb3805fe82abea0c23684890d1f33004e6815d5;hb=1e57ecc0dcbc64a6829a93dc81cfb6ab6f0ce71b;hpb=9b80f2bedbe5a8a9154dfa0ba3c7e63012287bea

diff --git a/lib/PublicInbox/Msgmap.pm b/lib/PublicInbox/Msgmap.pm
index 3fb3805f..a49b61e8 100644
--- a/lib/PublicInbox/Msgmap.pm
+++ b/lib/PublicInbox/Msgmap.pm
@@ -82,10 +82,10 @@ sub created_at {
 sub mid_insert {
 	my ($self, $mid) = @_;
 	my $dbh = $self->{dbh};
-	use constant MID_INSERT => 'INSERT INTO msgmap (mid) VALUES (?)';
-	my $sth = $self->{mid_insert} ||= $dbh->prepare(MID_INSERT);
+	my $sql = 'INSERT OR IGNORE INTO msgmap (mid) VALUES (?)';
+	my $sth = $self->{mid_insert} ||= $dbh->prepare($sql);
 	$sth->bind_param(1, $mid);
-	$sth->execute;
+	return if $sth->execute == 0;
 	$dbh->last_insert_id(undef, undef, 'msgmap', 'num');
 }