create index only if not exists

diff --git a/Open-ILS/src/sql/Pg/version-upgrade/3.1.5-3.2.0-upgrade-db.sql b/Open-ILS/src/sql/Pg/version-upgrade/3.1.5-3.2.0-upgrade-db.sql
index bc276b0..6ca82fb 100644 (file)
--- a/Open-ILS/src/sql/Pg/version-upgrade/3.1.5-3.2.0-upgrade-db.sql
+++ b/Open-ILS/src/sql/Pg/version-upgrade/3.1.5-3.2.0-upgrade-db.sql
@@ -4842,7 +4842,7 @@ transits accross all transit types.
 */
 
 -- Create an index for speedy check constraint lookups.
-CREATE INDEX active_transit_for_copy 
+CREATE INDEX IF NOT EXISTS active_transit_for_copy 
     ON action.transit_copy (target_copy)
     WHERE dest_recv_time IS NULL AND cancel_time IS NULL;