From 47e89f208a25652ec93529eb7dc4944ec5a73659 Mon Sep 17 00:00:00 2001
From: "acurtis@xiphis.org" <>
Date: Tue, 9 May 2006 13:31:46 -0700
Subject: bug#10952   "alter table from MyISAM to MERGE lost data without
 errors and warnings"   Add new handlerton flag which prevent user from
 altering table storage   engine to storage engines which would lose data.
 Both 'blackhole' and   'merge' are marked with the new flag.   Tests
 included.

---
 sql/handler.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'sql/handler.h')

diff --git a/sql/handler.h b/sql/handler.h
index e531a3f1077..f6e1dc54b9f 100644
--- a/sql/handler.h
+++ b/sql/handler.h
@@ -408,6 +408,7 @@ struct show_table_alias_st {
 #define HTON_ALTER_NOT_SUPPORTED     (1 << 1) //Engine does not support alter
 #define HTON_CAN_RECREATE            (1 << 2) //Delete all is used fro truncate
 #define HTON_HIDDEN                  (1 << 3) //Engine does not appear in lists
+#define HTON_ALTER_CANNOT_CREATE     (1 << 4) //Cannot use alter to create
 
 typedef struct st_thd_trans
 {
-- 
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