Re: CHGPF

[CRPence <CRPbottle@xxxxxxxxx>]

  I know it was not v3r1 which brought the ALTER function, since that 
is the release where I integrated some code available only via OS/400 
install, that was intended as effective PoC code for that feature.

  For way more than anyone probably cares...

  While the pairs v3r1 & v3r6 and v3r2 & v3r7 are often cited as mostly 
/functionally equivalent/, the former is even less so than the latter, 
since large amounts of new LIC code for change to RISC meant significant 
[re]work for a CISC counterpart; and could only happen by PTF because 
v3r1 was done before v3r6.  The latter pairing incurred the expense of 
the work trying to effect closer equivalence, in order to enable CISC 
installations to hold on to existing hardware longer and getting the 
newer function that had made it into the RISC hardware releases v3r6 & v3r7.

  A Redbooks document suggests in 9.10.1.1 that V3R2 was the origin of 
SQL ALTER TABLE & CHGPF SRCFILE().  Although V3R2 correlates to V3R7, 
that document then suggests the same function is available on V3R6. 
FWiW that document also gives a snippet of "9.10.1.2 How CHGPF Works"
http://www.redbooks.ibm.com/redbooks/pdfs/sg244187.pdf

  Stated release level availability from Jackie Jansen also suggests 
the ALTER function is available since the releases of V3R6, V3R2, & V3R7:
http://www.tug.on.ca/articles/Volume12/V12N5/V12N5_Jansen_ChangingFileLayoutHelp.html

Regards, Chuck

Crispin Bates wrote:
> V3R1/V3R6...
>
> http://archive.midrange.com/rpg400-l/200012/msg00528.html
>
> "James Lampert"  wrote:
>
> > Hmm. I don't recall ever hearing of a CHGPF command before. 
> > <<SNIP>>
> > And when did IBM slip it in without our noticing?