In MySQL 5.0.72 the Questions variable was changed to only contain the number
of client-initiated queries, NOT the number of overall queries. This caused
problems with the select/insert/update/delete percentages because Com_* was
still based on the overall queries.

MySQL 5.0.76 introduced a new variable 'Queries' with the behavior of the old
Questions variable.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
MySQL-Bug: 41131
MySQL-Bug-URL: http://bugs.mysql.com/?id=41131

====
Revision 2:
The first revision missed changing the instances of $OLD_STATUS{Questions}.

diff -Nuar mytop-1.6.orig/mytop mytop-1.6/mytop
--- mytop-1.6.orig/mytop	2009-02-14 17:28:38.696187159 -0800
+++ mytop-1.6/mytop	2009-02-14 17:36:31.192890507 -0800
@@ -800,8 +800,15 @@
 
         ## Queries per second...
 
-        my $avg_queries_per_sec  = sprintf("%.2f", $STATUS{Questions} / $STATUS{Uptime});
-        my $num_queries          = $STATUS{Questions};
+        my ($num_queries, $old_num_queries);
+        if(defined($STATUS{Queries})) {
+            $num_queries = $STATUS{Queries};
+            $old_num_queries = $OLD_STATUS{Queries};
+        } else {
+            $num_queries = $STATUS{Questions};
+            $old_num_queries = $OLD_STATUS{Questions};
+        }
+        my $avg_queries_per_sec  = sprintf("%.2f", $num_queries / $STATUS{Uptime});
 
         my @t = localtime(time);
 
@@ -820,25 +827,25 @@
 
 
         printf " Queries: %-5s  qps: %4.0f Slow: %7s         Se/In/Up/De(%%):    %02.0f/%02.0f/%02.0f/%02.0f \n",
-               make_short( $STATUS{Questions} ),  # q total
-               $STATUS{Questions} / $STATUS{Uptime},  # qps, average
+               make_short( $num_queries ),  # q total
+               $num_queries / $STATUS{Uptime},  # qps, average
                make_short( $STATUS{Slow_queries} ),    # slow
 
                # hmm. a Qcache hit is really a select and should be counted.
-               100 * ($STATUS{Com_select} + ($STATUS{Qcache_hits}||0) )    / $STATUS{Questions},
-               100 * ($STATUS{Com_insert} +  $STATUS{Com_replace} ) / $STATUS{Questions},
-               100 * ($STATUS{Com_update} )  / $STATUS{Questions},
-               100 * $STATUS{Com_delete} / $STATUS{Questions};
+               100 * ($STATUS{Com_select} + ($STATUS{Qcache_hits}||0) )    / $num_queries,
+               100 * ($STATUS{Com_insert} +  $STATUS{Com_replace} ) / $num_queries,
+               100 * ($STATUS{Com_update} )  / $num_queries,
+               100 * $STATUS{Com_delete} / $num_queries;
 
         $lines_left--;
 
         if ($t_delta)
         {
-          my $q_diff = ( $STATUS{Questions} - $OLD_STATUS{Questions} );
-#          print("q_diff: $STATUS{Questions} - $OLD_STATUS{Questions}  / $t_delta = $q_diff\n");
+          my $q_diff = ( $num_queries - $old_num_queries );
+#          print("q_diff: $num_queries - $old_num_queries  / $t_delta = $q_diff\n");
 
           printf("             qps now: %4.0f Slow qps: %3.1f  Threads: %4.0f (%4.0f/%4.0f) %02.0f/%02.0f/%02.0f/%02.0f \n",
-                 ( $STATUS{Questions} - $OLD_STATUS{Questions} ) / $t_delta,
+                 ( $num_queries - $old_num_queries ) / $t_delta,
                  ( # slow now (qps)
                   ($STATUS{Slow_queries} ) ?
                   ( $STATUS{Slow_queries} - $OLD_STATUS{Slow_queries} ) / $t_delta :