Index: openacs-4/packages/acs-subsite/tcl/group-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/tcl/group-procs.tcl,v
diff -u -N -r1.60.2.10 -r1.60.2.11
--- openacs-4/packages/acs-subsite/tcl/group-procs.tcl	28 Aug 2020 16:45:59 -0000	1.60.2.10
+++ openacs-4/packages/acs-subsite/tcl/group-procs.tcl	1 Sep 2020 14:32:30 -0000	1.60.2.11
@@ -699,10 +699,10 @@
         # will be there for both their roles of member and
         # administrator).
         set result [db_0or1row party_is_member {
-            select 1 from group_approved_member_map
-            where member_id = :party_id
-            and group_id = :group_id
-            limit 1
+            select exists (select 1 from group_approved_member_map
+                           where member_id = :party_id
+                           and group_id = :group_id)
+            from dual
         }]
     }
     return $result