diff --git a/tools/benchmark.pl b/tools/benchmark.pl
index 7c02937..36ab2a3 100755
--- a/tools/benchmark.pl
+++ b/tools/benchmark.pl
@@ -5,14 +5,20 @@
 
 use strict;
 
-@ARGV || die "Usage: $0 <tabname> [<tabname> ...]\n";
+@ARGV || die "Usage: $0 <tabname>[:<colname>] ...\n";
 
 foreach $a (@ARGV) {
   my $tn="${a}";
+  my $col="p";
+  if ( $tn =~ /(.*):(.*)/ ) {
+    $col = $2;
+    $tn = $1;
+  }
   print "select count(*) from \"${tn}\";\n";
+  print "select min(pc_numpoints(\"${col}\")) from \"${tn}\";\n";
   print "select pg_size_pretty(pg_total_relation_size('${tn}'));\n";
   # full decompression
-  print "explain analyze select PC_FilterEquals(p,'z',PC_PatchMax(p,'z')) from \"${tn}\";\n";
+  print "explain analyze select PC_FilterEquals(\"${col}\",'z',PC_PatchMax(\"${col}\",'z')) from \"${tn}\";\n";
   # header only
-  print "explain analyze select PC_PatchAvg(p,'z') from \"${tn}\";\n";
+  print "explain analyze select PC_PatchAvg(\"${col}\",'z') from \"${tn}\";\n";
 }