From 075da685e606bab4e1b7a8064119a24261d66657 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 3 Jul 2011 12:00:18 -0600
Subject: [PATCH] Ensure link column cannot be added to table without updating
 user_version

---
 src/calibre/library/schema_upgrades.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/calibre/library/schema_upgrades.py b/src/calibre/library/schema_upgrades.py
index 2907e43098..a9cd36a588 100644
--- a/src/calibre/library/schema_upgrades.py
+++ b/src/calibre/library/schema_upgrades.py
@@ -606,6 +606,7 @@ class SchemaUpgrade(object):
         '''
 
         script = '''
+        BEGIN TRANSACTION;
         ALTER TABLE authors ADD COLUMN link TEXT NOT NULL DEFAULT "";
         '''
         self.conn.executescript(script)