From 3c5bc44ddf5c1dd11a5141b463779d507c411c28 Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Tue, 27 Mar 2018 10:42:01 -0400
Subject: [PATCH] Fix potential upgrade error from c96363746b

If a related item was defined using both an old userID and the current
one, the schema upgrade step could fail.
---
 chrome/content/zotero/xpcom/schema.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chrome/content/zotero/xpcom/schema.js b/chrome/content/zotero/xpcom/schema.js
index 51261d0366..bb2a31514d 100644
--- a/chrome/content/zotero/xpcom/schema.js
+++ b/chrome/content/zotero/xpcom/schema.js
@@ -2424,7 +2424,7 @@ Zotero.Schema = new function(){
 						if (matches) {
 							// Wrong libraryID
 							if (matches[1] != userID) {
-								yield Zotero.DB.queryAsync(`UPDATE itemRelations SET object='http://zotero.org/users/${userID}/items/${matches[2]}' WHERE itemID=? AND predicateID=?`, [row.itemID, predicateID]);
+								yield Zotero.DB.queryAsync(`UPDATE OR REPLACE itemRelations SET object='http://zotero.org/users/${userID}/items/${matches[2]}' WHERE itemID=? AND predicateID=?`, [row.itemID, predicateID]);
 							}
 						}
 					}