From 48ae9b293994959f81aeb8abc982efb47ea723c1 Mon Sep 17 00:00:00 2001
From: hjp <hjp@d47eeb7a-11fe-0310-b519-e5a4e12f9765>
Date: Sat, 11 Jan 2014 18:44:23 +0000
Subject: [PATCH] remove_session

---
 Notes | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Notes b/Notes
index fe05999..3cb3ba9 100644
--- a/Notes
+++ b/Notes
@@ -136,3 +136,9 @@ where file_type = 'f' and checksum is null
   and instances.session=sessions.id
 limit 100000;
 
+remove_session:
+
+select v.id from instances i right outer join versions2 v  on
+i.version=v.id where i.id is null
+is very slow. Do two independent queries and difference via judy?
+In any case all the cleanup stuff needs to be outside of the loop.