diff --git a/HowtoMySQL.md b/HowtoMySQL.md
index a4d43ec3..e516c0ba 100644
--- a/HowtoMySQL.md
+++ b/HowtoMySQL.md
@@ -744,8 +744,18 @@ mysql> SELECT table_schema "DB Name",
      Round(Sum(data_length + index_length) / 1024 / 1024, 1) "DB Size in MB" 
 FROM information_schema.tables 
 GROUP BY table_schema; 
+
+; Si on préfère avoir le détail entre taille de données et d'index : 
+
+mysql> SELECT table_schema "DB Name", 
+       Round(Sum(data_length) / 1024 / 1024, 1) "Data (in MB)",
+       Round(Sum(index_length) / 1024 / 1024, 1) "Index (in MB)",
+       Round(Sum(data_length + index_length) / 1024 / 1024, 1) "Total size in MB" 
+FROM information_schema.tables 
+GROUP BY table_schema; 
 ~~~
 
+
 Pour lister la taille de toutes les tables de toutes les bases :
 
 ~~~{.sql}