Blank space updatation to Collection field in Oracle 10g

Hi,
we have the Oracle 9i database in the dev environment and Oracle 10g in Production environment.
In Oracle 9i, the below scenario works find, but in Oracle 10g it won'nt, The scenerio is ,
Update table1
set test_collection = ' '; -- works fine in Oracle 9i , but it wont works in Oracle 10g,
Update tabel1
set test_collection = null; -- works in both the versions.
Please suggest,.
raja k

What is myv, is that the collection name ?? See post number 5 of this thread where I declared it.
>
In Oracle 9i, we need not to specify the collection
name while updating the collection type field in the
table. 9.2.0.6 was notoriously buggy and wasn't considered stable till 9.2.0.7 if I recall correctly. And now (thankfully) it's unsupported.
The sql code was written in concern to Oracle 9i, now
while migrating to Oracle 10g, we are getting the
problem with this. The problem is , i don'nt have the
access to Production environment, which is migrated
to Oracle 10g, we develop the code on Oracle 9i, and
will release to deploy on Oracle 10g. Develop in 9i and deploy to 10g! Do you really think that's a good setup? How about upgrading your development environment to match production.
update table1 set test_collection = null; - this
works fine in Oracle 9i ,
update table1 set test_collection = ''; - this works
fine in Oracle 9i ,
but in Oracle 10g ,
update table1 set test_collection = null; - this
works fine in Oracle 10g ,
update table1 set test_collection = ''; - this won'nt
works in Oracle 10g , Yes, I already understand what your issue is.
as you suggested, do we need to specify the
collection name while updating the collection type
field. in Oracle 10g, In Oracle 9i , it won'nt
required ?? Yes, this would be the correct way to do it.
Karthick,
because null is not same as ''
SQL> select * from dual where ''=null
2 /
no rows selectedErrrm, yes it is actually...
SQL> select 1 from dual where '' is null;
1
1
SQL>
... if you use the correct condition for checking nulls.

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