From b6b5f9fabe4866a8753e81e1f80593b645f35d8e Mon Sep 17 00:00:00 2001
From: Igor Babaev <igor@askmonty.org>
Date: Sat, 31 Dec 2011 02:25:57 -0800
Subject: Implementation of the MWL#247: Make the optimizer use extended keys.
 The main patch. .

---
 sql/structs.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'sql/structs.h')

diff --git a/sql/structs.h b/sql/structs.h
index 18f90d5b8b1..be53a88a0cc 100644
--- a/sql/structs.h
+++ b/sql/structs.h
@@ -77,6 +77,9 @@ typedef struct st_key {
   ulong flags;                          /* dupp key and pack flags */
   uint	key_parts;			/* How many key_parts */
   uint	usable_key_parts;		/* Should normally be = key_parts */
+  uint ext_key_parts;              /* Number of key parts in extended key */
+  ulong ext_key_flags;             /* Flags for extended key              */
+  key_part_map ext_key_part_map;   /* Bitmap of pk key parts in extension */ 
   uint  block_size;
   uint  name_length;
   enum  ha_key_alg algorithm;
-- 
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