}
my ($sqlclause, @joins)=(undef, ());
($sqlclause, @joins) = $tree->to_sql($hasvals) if($tree);
+# use Data::Dumper;
+# print Dumper $tree if($tree);
# print "SQL(" . scalar(@joins) ."): $sqlclause\n";
my $sql="\tSELECT fxt1.files_id FROM tags t1";
my @crosses=();