diff --git a/stats_delete.sql b/stats_delete.sql
new file mode 100644
index 0000000..6c9c373
--- /dev/null
+++ b/stats_delete.sql
@@ -0,0 +1,21 @@
+Delete statistics of the complete database
+
+EXEC DBMS_STATS.delete_database_stats;
+
+-- Delete statistics of a single schema
+
+EXEC DBMS_STATS.delete_schema_stats('DBACLASS');
+
+-- Delete statistics of single tabale
+EXEC DBMS_STATS.delete_table_stats('DBACLASS', 'DEPT');
+
+-- Delete statistics of a column
+EXEC DBMS_STATS.delete_column_stats('DBACLASS', 'DEPT', 'CLASS');
+
+--Delete statistics of an index
+
+EXEC DBMS_STATS.delete_index_stats('DBACLASS', 'CLASS_IDX');
+
+--Delete dictionary a in db
+
+EXEC DBMS_STATS.delete_dictionary_stats;