Index: openacs-4/packages/acs-admin/www/auth/batch-job.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-admin/www/auth/batch-job.tcl,v
diff -u -r1.15 -r1.16
--- openacs-4/packages/acs-admin/www/auth/batch-job.tcl	15 Sep 2017 07:01:22 -0000	1.15
+++ openacs-4/packages/acs-admin/www/auth/batch-job.tcl	22 May 2018 15:06:10 -0000	1.16
@@ -144,8 +144,8 @@
            success_p,
            message,
            element_messages,
-           (select count(*) from users u2 where u2.user_id = user_id) as user_exists_p
-    from   auth_batch_job_entries
+           exists (select 1 from users where user_id = e.user_id) as user_exists_p
+    from   auth_batch_job_entries e
     where  [template::list::page_where_clause -name batch_actions]
     [template::list::filter_where_clauses -and -name batch_actions]
     order  by entry_id