Fetch the row with latest data,when multiple rows exist for same user
Hi ,
Thanks for reading the post.I have table with the follwoing data.
user requestdate createdate
jake 02/21/2006 15:33:41 02/25/2006 15:33:41
jake 04/20/2006 15:33:41 04/21/2006 15:33:41
jake 04/23/2006 15:33:41 04/24/2006 15:33:41
jill 02/21/2006 15:33:41 02/25/2006 15:33:41
jill 04/20/2006 15:33:41 04/21/2006 15:33:41
The data type of user,reqdate,createdate is varchar2.I want to write a query that
gives me all the users and his latest information.After running the query I am expecting the result
user requestdate createdate
jake 04/23/2006 15:33:41 04/24/2006 15:33:41
jill 04/20/2006 15:33:41 04/21/2006 15:33:41
I am not able to write the correct query.Need help , Thanks
Pandu
I am sorry Again,Here are the actual tables and the data in them.
SQL> desc test;
Name Null? Type
ID NOT NULL VARCHAR2(22)
OBJECTNAME VARCHAR2(30)
SQL> select id,objectname from test order by objectname;
ID OBJECTNAME
49 Nani
43 Nani
46 jack
41 jack
45 jack
47 jill
42 jill
7 rows selected.
SQL> desc testattr;
Name Null? Type
ID NOT NULL VARCHAR2(22)
ATTRNAME VARCHAR2(22)
ATTRVALUE VARCHAR2(22)
SQL> select * from testattr;
ID ATTRNAME ATTRVALUE
41 rdate 02/21/2006 15:33:41
41 cdate 02/25/2006 15:33:41
45 rdate 04/20/2006 15:33:41
45 cdate 04/21/2006 15:33:41
46 rdate 04/23/2006 15:33:41
46 cdate 04/24/2006 15:33:41
42 rdate 02/21/2006 15:33:41
42 cate 02/25/2006 15:33:41
47 rdate 04/20/2006 15:33:41
47 cdate 04/21/2006 15:33:41
43 rdate 04/04/2006 14:33:41
43 cdate 04/05/2006 16:33:41
49 rdate 05/03/2006 09:32:55
49 cdate 05/05/2006 07:12:55
14 rows selected.All the attributes have data type varchar2.I want to write a query that gives the following result.
objectname (attrvalue)requestdate (attrval)createdate
jack 04/23/2006 15:33:41 04/24/2006 15:33:41
jill 04/20/2006 15:33:41 04/21/2006 15:33:41
Nani 05/03/2006 09:32:55 05/05/2006 07:12:55.Thanks,Need help.
Pandu
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