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Status Not under consideration
Workspace IBM i
Categories Db2 for i
Created by Guest
Created on Sep 15, 2022

Declare Array variables in SQL/PSM like in DB2 LUW

In stored procedures and UDF/UDTF of DB2 for i, I would like to be able to declare an array like in this example :

DECLARE TYPE CARD_NUMBER AS VARCHAR(1) ARRAY [24];

… this is already possible on DB2 LUW, as can be seen in this example:

https://rosettacode.org/wiki/Luhn_test_of_credit_card_numbers#SQL_PL


Idea priority Medium
  • Guest
    Oct 5, 2022

    I regret your decision to close this ticket.

    I do not understand what is the interest of disseminating in a database some arrays that are specific to a given procedure. This is counterproductive and can cause maintenance problems.

  • Guest
    Oct 3, 2022
    IBM does not intend to provide a solution to this Idea at this time, so it is being closed.

    The database development team has a long list of higher priority requests to satisfy, so it is unlikely that this enhancement will be delivered any time soon.

    Db2 for i has support for arrays in SQL PL, but you must declare the array data type using the CREATE TYPE statement. This defines a data type that can be referenced by any SQL PL routine, not scoped to a specific one.

    The equivalent of this declare:
    DECLARE TYPE CARD_NUMBER AS VARCHAR(1) ARRAY [24];
    DECLARE REVERSE CARD_NUMBER;
    is:
    -- outside of the SQL PL create the type
    CREATE TYPE CARD_NUMBER AS VARCHAR(1) ARRAY[24];
    -- within the SQL PL, reference the type
    DECLARE REVERSE CARD_NUMBER;

    An unqualified array data type is resolved using the SQL Path.


    Db2 for i development
    IBM Power Systems Development