Oracle: add new index on nsm_user_preferences and delete duplicates #…

…3870

Refs #3870 #3868

etc/schema/updates/oracle/oracle_v1-8-0_to_v1-8-3.sql

@@ -0,0 +1,41 @@
+/* update script for icinga-web on oracle version v1.8.3 */
+set echo on
+set feedback on
+/* logging */
+spool oracle_v1-8-0_to_v1-8-3.log
+
+/* define index tablespace. change this for your needs */
+define IXTBS='ICINGAWEB_IDX1';
+
+/* 
+drop existing constraint if any 
+ignore ORA-02443 nonexistent constraint warning!
+*/
+alter table nsm_user_preference drop constraint nsm_user_pref_userid_key_uq drop index;
+
+/* from now leave on error */
+whenever sqlerror exit failure
+
+
+/* delete duplicates ifirst if any and than add unique key for preference user_id and key  #3870 */
+delete from nsm_user_preference ud
+where 
+  upref_modified <
+  (select max(upref_modified) from nsm_user_preference ur
+    where ud.upref_user_id=ur.upref_user_id
+      and ud.upref_key=ur.upref_key);
+alter table nsm_user_preference add constraint nsm_user_pref_userid_key_uq UNIQUE (upref_user_id, upref_key)
+  using index tablespace &IXTBS;
+
+
+/* update version info */
+DELETE FROM nsm_db_version;
+INSERT INTO nsm_db_version VALUES ('1','icinga-web/v1.8.3', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP);
+
+/* commit all changes as single transaction, this will not be reached on error */
+commit;
+
+/*  done */
+spool off;
+exit;
+