- From: "Alexander Fatkulin" <afatkulin@xxxxxxxxx>
- To: ranko.mosic@xxxxxxxxx
- Date: Tue, 13 Mar 2007 10:52:07 +1000
Ranko, since you are almost certainly going ahead to ORA-01779 with such kind of query if you write it as a single "update (select ...) set ..." (Oracle doesn't like when you join tables with supplied variables/literals even if that leads to a fully key-preserved join). I would try to use merge instead. Something like this (I've just typed it in, can't verify): merge into sub_svc_parm ssp using ( SELECT b.sub_svc_id, d.destination_group_id val FROM sub_svc a, sub_svc b, sub_svc_parm c, RATE_CENTRE_TEMP_&1 d WHERE a.SUB_ID = b.SUB_ID AND a.SVC_ID = 10000 AND b.SVC_ID = 10008 AND a.SUB_SVC_ID = c.SUB_SVC_ID AND c.parm_id = 10230 AND SUBSTR(c.val,1,6) = d.npanxx) v on (ssp.sub_svc_id=v.sub_svc_id and ssp.parm_id = 12650) when matched then update set ssp.val=v.val; btw - what version? I assume you're on 10g so you don't need both matched/not matched sections. On 3/13/07, Ranko Mosic <ranko.mosic@xxxxxxxxx> wrote:
Hi List, I need to update large table sub_svc_parm ( over billion rows). This is PL/SQL block that does it: I want to rewrite so it is executed as single SQL update statement. Any suggestions ?
-- Alexander Fatkulin -- http://www.freelists.org/webpage/oracle-l
- From: Ranko Mosic