update of the clause... help
Hello
again we here is... problems with the update statement, I hope that someone will take some time and try to help me solve this problem.
I have the following table:
[code]
create the table ozn_test
(
Identification number,
Number value,
date of entry_date
);
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.01.2002','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.10.2002','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.04.2003','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.05.2003','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.01.2005','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.01.2006','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.01.2007','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.01.2007','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('01.05.2008','dd.mm.yyyy'));
insert into ozn_test (id, value, entry_date) values (null, 1181, to_date('8.11.2013','dd.mm.yyyy'));
[/ code]
Now what I want to do is update the table ID field ozn_test so that it will contain next
resoult:
[code]
ID VALUE ENTRY_DATE
1 1181 01.01.2002
1 1181 01.10.2002
2 1181 01.04.2003
2 1181 01.05.2003
3 1181 01.01.2005
4 1181 01.01.2006
5 1181 01.01.2007
5 1181 01.01.2007
6 1181 01.05.2008
7 1181 08.11.2013
[/ code]
As you can see I need set the same number to each line that has the same VALUE in the same YEAR of ENTRY_DATE or
increment this number if there is a line with another year.
If its not clear, please let me know.
Thank you for your comments!
or if you really want to use update
setting a day ozn_test set id =
(
Select the id of
(
Select dense_rank() (order of development, to_char (entry_date, 'YYYY')) id, rowid rid
of ozn_test
) t
where
t.RID = ozn_test.rowid
)
Tags: Database
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