Why does the following work? I open a cursor with FOR UPDATE OF COLUMN_A
and then do an update of COLUMNB, WHERE CURRENT OF the cursor. Surely I
shouldn't be allowed to do that?
(Ora 8.1.7.2)
Any insight appreciated!
Thanks
- Bill.
SQLWKS> create table test_table
2> (
3> column_a number,
4> column_b number
5> )
6>
Statement processed.
SQLWKS> insert into test_table values (1,2)
2>
1 row processed.
SQLWKS> insert into test_table values (2,3)
2>
1 row processed.
SQLWKS> insert into test_table values (3,4)
2>
1 row processed.
SQLWKS> declare
2> cursor c1 is select * from test_table for update of column_a;
3> begin
4> for i in c1 loop
5> update test_table set column_b = column_b * 2
6> where current of c1;
7> end loop;
8> end;
9>
Statement processed.
SQLWKS> select *
2> from test_table
3>
COLUMN_A COLUMN_B
---------- ----------
1 4
2 6
3 8
3 rows selected.
--
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--
Author: Bill Buchan
INET: [EMAIL PROTECTED]
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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