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Status Not under consideration
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Dec 15, 2017

RELATED IDEAS

"EXTEND TABLE" SQL statement

To day there are no elegant way to map OO class extensions direct in Db2. So it would be appreciated that Db2 invent a new statement that Extend a table as a new table with extra columns. In effect - Db2 makes a internal maintained one-to-one relation between the original table and the "extension" - Or think about is a section of new columns added to the existing table BUT hidden form the original table I/O "record layout"


Use Case:

Lets say you have a "person" and some persons can be "employees". The we can created the table(s) like this


create table person (
id int generated always as identity unique ,
name varchar(256)
);

extend table person as employee (
salary dec(9,2)
)

if you now do:

Select * from person;

you will have the:
id , name

if you do a:

Select * from employee;

Then because the "employee" now extends the "person" you will have:
id, name, salary

Expected behaviour in any OO environment.


Idea priority Medium
  • Guest
    Reply
    |     Dec 8, 2020

    IBM does not intend to provide a solution to this request at this time, so it is being closed.

    It would be possible to implement something similar to this by using additional tables and views.

  • Guest
    Reply
    |     Dec 18, 2017

    The CEAC has reviewed this requirement and recommends that IBM view this as a medium priority requirement that should be addressed.

    Background: The COMMON Europe Advisory Council (CEAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CEAC has a key role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community, and has therefore reviewed your RFE.

    For more information about CEAC, see http://www.comeur.org/i4a/pages/index.cfm?pageid=3285

    Dawn May - CEAC Program Manager

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