Problem with Merge..Pls help !!!

Question

MERGE
INTO main m
USING temp t
ON ( t.id = m.id )
WHEN NOT MATCHED
THEN
UPDATE set m.edate=t.sdate where m.edate is null
INSERT (m.id
, m.name
, m.address
, m.sdate
, m.edate)
VALUES (t.id
, t.name
, t.address
,t.sdate
,t.edate);
When i execute this query i am getting ORA 00905 error. This is a simple query and is easily understandable. When data in two tables doesn't match i am trying to update based on a condition and insert. Can anyone help and tell me whats wrong and how to proceed further
Thanks,
VJ
Edited by: user13365939 on Aug 12, 2010 8:34 PM

Answer 1

Frnk, Thanks for your quick response but it doesn't solve my problem.
Here is my scenario. Can you tell me how this can be done..
create table temp
id int,
name varchar(10),
address varchar(10),
sdate date,
edate date
create table main
id int,
name varchar(10),
address varchar(10),
sdate date,
edate date
INSERT INTO temp
(id, name, address, sdate, edate)
VALUES
(1,'a','add1',sysdate, null);
INSERT INTO temp
(id, name, address, sdate, edate)
VALUES
(2,'b','add2',sysdate, null);
INSERT INTO main
(id, name, address, sdate, edate)
VALUES
(1,'a','add1',sysdate, null);
INSERT INTO temp
(id, name, address, sdate, edate)
VALUES
(2,'b','address change',sysdate, null);
Here we have a data change in both the temp and main tables. Value in the second row( Address field). In this case since the data doesnt match i now need to update the m.edate=t.sdate where m.edate is null and then insert a rew record in main table. Can you tell me how this can be done. I need to do this only if the two table datas doesnt match so i need this to be done in WHEN NOT MATCHED section right? or do you know how this can be done? If data doesnt match then i have to update the enddate in main table which is set to null with start date in temp table where all main.enddate is null and then insert a new record. Appreciate if you could tell me how to do this?