my $where = $self->_collapse_cond($self->{attrs}{where} || {});
my $num_where = scalar keys %$where;
- my @unique_queries;
+ my (@unique_queries, %seen_column_combinations);
foreach my $name (@constraint_names) {
- my @unique_cols = $self->result_source->unique_constraint_columns($name);
- my $unique_query = $self->_build_unique_query($query, \@unique_cols);
+ my @constraint_cols = $self->result_source->unique_constraint_columns($name);
- my $num_cols = scalar @unique_cols;
+ my $constraint_sig = join "\x00", sort @constraint_cols;
+ next if $seen_column_combinations{$constraint_sig}++;
+
+ my $unique_query = $self->_build_unique_query($query, \@constraint_cols);
+
+ my $num_cols = scalar @constraint_cols;
my $num_query = scalar keys %$unique_query;
my $total = $num_query + $num_where;