Merge sinisa@work.mysql.com:/home/bk/mysql

into sinisa.nasamreza.org:/mnt/work/mysql

sql/opt_sum.cc

@@ -165,10 +165,9 @@ int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds)
 	    error=table->file->index_last(table->record[0]) !=0;
 	  else
 	  {
-	    (void) table->file->index_read(table->record[0], key_buff,
-					   ref.key_length,
-					   HA_READ_AFTER_KEY);
-	    error=table->file->index_prev(table->record[0]) ||
+           error = table->file->index_read(table->record[0], key_buff,
+                                          ref.key_length,
+                                         HA_READ_PREFIX_LAST) ||
 	      key_cmp(table,key_buff,ref.key,ref.key_length);
 	  }
 	  if (table->key_read)

sql/sql_acl.cc

@@ -995,7 +995,9 @@ static int replace_user_table(TABLE *table, const LEX_USER &combo,
   {
     if (combo.password.length != HASH_PASSWORD_LENGTH)
     {
-      my_error(ER_PASSWORD_NO_MATCH,MYF(0));
+      my_printf_error(ER_PASSWORD_NO_MATCH,
+          "Password hash should be a %d-digit hexadecimal number",
+          MYF(0),HASH_PASSWORD_LENGTH);
       DBUG_RETURN(-1);
     }
     password=combo.password.str;

sql/sql_class.cc

@@ -156,7 +156,7 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
   */
   {
     pthread_mutex_lock(&LOCK_thread_count);
-    ulong tmp=(ulong) (rnd(&sql_rand) * 3000000);
+    ulong tmp=(ulong) (rnd(&sql_rand) * ((ulong)~0L));
     randominit(&rand, tmp + (ulong) start_time,
 	       tmp + (ulong) thread_id);
     pthread_mutex_unlock(&LOCK_thread_count);