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Status Delivered
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Feb 10, 2020

DISPLAY_JOURNAL UDTF enhancement request

DISPLAY_JOURNAL UDTF currently accepts library and object as parameters and also if object name is not specified, it defaults to "ALL" for the library. We would like to request for an enhancement where this UDTF can accept a list of objects as parameter (not in WHERE clause due to performance reasons)

Here's an example illustration of what I am referring to:

SELECT journal_code, journal_entry_type, object, object_type, X.*
FROM TABLE (QSYS2.Display_Journal('JRNLIB', 'JRNNAM',
JOURNAL_CODES => 'D,F,R',
STARTING_RECEIVER_LIBRARY => 'RCVRLIB', STARTING_RECEIVER_NAME => 'RCVRNAM'
) ) AS X
WHERE (SUBSTR(object, 1, 20) IN (
'TABLE1 LIBNAM ', 'TABLE2 LIBNAM ', 'TABLE3 LIBNAM '));

We are proposing that the table parameter comes as part of the parameter to the UDTF as shown below.

SELECT journal_code, journal_entry_type, object, object_type, X.*
FROM TABLE (QSYS2.Display_Journal('JRNLIB', 'JRNNAM',
JOURNAL_CODES => 'D,F,R',
STARTING_RECEIVER_LIBRARY => 'RCVRLIB', STARTING_RECEIVER_NAME => 'RCVRNAM',
OBJECT_OBJTYPE=>'*FILE',
OBJECT_LIBRARY=>'LIBNAM',
OBJECT_NAME => 'TABLE1,TABLE2,TABLE3',
OBJECT_MEMBER=>'*ALL'
) ) AS X


Use Case:

If the object parameter of the UDTF accepts a list of names then it would help implement a "pub-sub" design pattern which could benefit environments where there is a lot of journal traffic. This would greatly help with off platform connectors that use JDBC or ODBC and enables quickly streaming or transmitting the data over the network.


Idea priority High
  • Guest
    Reply
    |
    Nov 13, 2020

    The QSYS2.DISPLAY_JOURNAL table function was enhanced in fall 2020 with with IBM i 7.4 PTF Group level 10 and IBM i 7.3 PTF Group level 22. The object name parameter now supports a list of object names.