1 files changed, 20 insertions, 0 deletions
diff --git a/lib/PublicInbox/OverIdx.pm b/lib/PublicInbox/OverIdx.pm
index 5f96a5b0..8f7cf2bb 100644
--- a/lib/PublicInbox/OverIdx.pm
+++ b/lib/PublicInbox/OverIdx.pm
@@ -656,6 +656,26 @@ UPDATE over SET ddd = ? WHERE num = ?
          $sth->execute;
  }
  
+sub merge_xref3 { # used for "-extindex --dedupe"
+        my ($self, $keep_docid, $drop_docid, $oidhex) = @_;
+        my $oidbin = pack('H*', $oidhex);
+        my $sth = $self->{dbh}->prepare_cached(<<'');
+UPDATE OR IGNORE xref3 SET docid = ? WHERE docid = ? AND oidbin = ?
+
+        $sth->bind_param(1, $keep_docid);
+        $sth->bind_param(2, $drop_docid);
+        $sth->bind_param(3, $oidbin, SQL_BLOB);
+        $sth->execute;
+
+        # drop anything that conflicted
+        $sth = $self->{dbh}->prepare_cached(<<'');
+DELETE FROM xref3 WHERE docid = ? AND oidbin = ?
+
+        $sth->bind_param(1, $drop_docid);
+        $sth->bind_param(2, $oidbin, SQL_BLOB);
+        $sth->execute;
+}
+
  sub eidxq_add {
          my ($self, $docid) = @_;
          $self->dbh->prepare_cached(<<'')->execute($docid);