Better optimization for InnoDB and BDB tables for ORDER BY

1 files changed, 1 insertions, 0 deletions

diff --git a/sql/handler.h b/sql/handler.h
index f6e9ad61d94..560420a480d 100644
--- a/sql/handler.h
+++ b/sql/handler.h
@@ -223,6 +223,7 @@ public:
     { return ulonglong2double(data_file_length) / IO_SIZE + 1; }
   virtual double read_time(ha_rows rows) { return rows; }
   virtual bool fast_key_read() { return 0;}
+  virtual key_map keys_to_use_for_scanning() { return 0; }
   virtual bool has_transactions(){ return 0;}
   virtual uint extra_rec_buf_length() { return 0; }
   virtual ha_rows estimate_number_of_rows() { return records+EXTRA_RECORDS; }