RE: CHAR for BIT DATA fld -- RPG400-L

Interesting that the Generate_Unique() SQL function returns 13 bytes, while the GENUUID API function
returns 16.

Standard UUID/GUIDs are 16 bytes, so apparently the Generate_Unique() function isn't a UUID/GUID.

From the info you provide, it appears that the idea is to use Generate_Unique() in place of
CURRENT_TIMESTAMP when you want to use a timestamp to uniquely identify records.

However, going back to Mike's original post, the Generate_Unique() returns something that looks like
so:
x'01009151018F3175088E489000'

Which doesn't seem to match what he is asking for.

Given that DB2 LUW appears to work the same way as the i, it seems that either Mike is incorrect about
the values he needs or the DB2 Windows box is not using the Generate_Unique() function.

Charles Wilt
--
Software Engineer
CINTAS Corporation - IT 92B
513.701.1307

wiltc@xxxxxxxxxx

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of BirgittaHauser
Sent: Friday, June 20, 2008 1:16 AM
To: 'RPG programming on the AS400 / iSeries'
Subject: AW: CHAR for BIT DATA fld

Hi,

Too fast last time!

I assume the column was defined with CHAR(13) FOR BIT DATA, because the
column must be filled with an unique value where the timestamp is
encrypted.

Since V5R4 SQL provides a scalar function GENERATE_UNIQUE(): The
GENERATE_UNIQUE function returns a bit data character string 13 bytes long
(CHAR(13) FOR BIT DATA) that is unique compared to any other execution of
the same function.

The result of the function is a unique value that includes the internal
form
of the Universal Time, Coordinated (UTC) and the system serial number. The
result cannot be null.

This function differs from using the special register CURRENT TIMESTAMP in
that a unique value is generated for each instance of the function in an
SQL
statement and each row of a multiple row insert statement or an insert
statement with a fullselect. The timestamp value that is part of the
result
of this function can be determined using the TIMESTAMP function with the
result of GENERATE_UNIQUE as an argument.

Example:
INSERT INTO MYTABLE (FLD1, FLD2, FLD3)
VALUES(Generate_Unique(),'ABC', 123);

SELECT Timestamp(Fld1), Fld1

From MyTable;

May be that's what you are looking for!

Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)

"If you think education is expensive, try ignorance." (Derek Bok)

"What is worse than training your staff and losing them? Not training
them
and keeping them!"

-----Ursprüngliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
Im
Auftrag von MKirkpatrick@xxxxxxxxxxxxxxxxx
Gesendet: Thursday, June 19, 2008 20:46
An: RPG400-L@xxxxxxxxxxxx
Betreff: CHAR for BIT DATA fld

I have a column defined as CHAR FOR BIT DATA or CHAR(13) CCSID 65535 NOT
NULL. Why? Because this is the way it is defined in another table from
DB2 (Windows) that I am trying to duplicate/populate. W/in my RPG pgm,
the following stmt generates the correct data: CREDGUID =
x'20080618090909123456202020';

My problem is I need to use a variable (TIMESTAMP + 3 chars) part of the
value used to populate the CREDGUID column. I have tried stringing
together using the '+' char but when the data gets into the column it is
truncated because the working variable is larger than the result
(CREDGUID). I also tried using the HEX SQL BIF without success.

Any ideas or suggestions would be greatly appreciated. Thanks.

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