Merge tnurnberg@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

into  mysql.com:/misc/mysql/31700/50-31700

sql/sql_class.h

@@ -1369,8 +1369,19 @@ public:
   ulonglong  limit_found_rows;
   ulonglong  options;           /* Bitmap of states */
   longlong   row_count_func;    /* For the ROW_COUNT() function */
-  ha_rows    cuted_fields,
-             sent_row_count, examined_row_count;
+  ha_rows    cuted_fields;
+
+  /*
+    number of rows we actually sent to the client, including "synthetic"
+    rows in ROLLUP etc.
+  */
+  ha_rows    sent_row_count;
+
+  /*
+    number of rows we read, sent or not, including in create_sort_index()
+  */
+  ha_rows    examined_row_count;
+
   /*
     The set of those tables whose fields are referenced in all subqueries
     of the query.
@@ -1403,7 +1414,11 @@ public:
   /* Statement id is thread-wide. This counter is used to generate ids */
   ulong      statement_id_counter;
   ulong	     rand_saved_seed1, rand_saved_seed2;
-  ulong      row_count;  // Row counter, mainly for errors and warnings
+  /*
+    Row counter, mainly for errors and warnings. Not increased in
+    create_sort_index(); may differ from examined_row_count.
+  */
+  ulong      row_count;
   long	     dbug_thread_id;
   pthread_t  real_id;
   uint	     tmp_table, global_read_lock;

sql/sql_select.cc

@@ -10347,6 +10347,15 @@ do_select(JOIN *join,List<Item> *fields,TABLE *table,Procedure *procedure)
       error= (*end_select)(join,join_tab,0);
       if (error == NESTED_LOOP_OK || error == NESTED_LOOP_QUERY_LIMIT)
 	error= (*end_select)(join,join_tab,1);
+
+      /*
+        If we don't go through evaluate_join_record(), do the counting
+        here.  join->send_records is increased on success in end_send(),
+        so we don't touch it here.
+      */
+      join->examined_rows++;
+      join->thd->row_count++;
+      DBUG_ASSERT(join->examined_rows <= 1);
     }
     else if (join->send_row_on_empty_set())
     {