How to change the type of object?
I have an object type, as shown below:Here are the object and its type
create or replace type test_object1 as an object
(
val1 varchar2 (50).
val2 varchar2 (50).
VARCHAR2 (50) val3
);
create or replace type test_type1 is table of the test_object1;
Now I want to change the type of object. I want to increase the size of val1 to varchar2 (100).
Any body could help for the alter script.
Thank you
Lavan
>
SQL > alter type test_object1 change attribute (varchar2 (100)) val1;
>
Which won't work OPs example. Your example does not include the second type of object that depends on the first type.
You cannot change the underlying type unless you use the CASCADe or INVALIDATE option.
>
change the type of test_object1 change attribute (val1 varchar2 (100)) waterfall;
>
See the CASCADE clause in the link provided by Osame
>
CASCADE clause
Specify the CASCADE clause if you want to propagate the type change to the tables and dependent types. Oracle database abandons the statement if errors are found in the dependent types or tables, unless you also specify the FORCE.
If you change the property of the type between FINAL and NON-FINAL, you must specify this clause to convert data in the tables and dependent columns. Please refer to [NOT] FINAL.
Tags: Database
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