From: Dan Fitzgerald
Subject: Re: [U2] [UV] Distributed SELECTs for distributed (Type30)
files
> I'm a bit confused by the subject line, though. Type 30 or
distributed?
> In UV, type 30 is dynamic.
I'm trying to think of a clever excuse for why I called distributed
files "Type30". Can't.
It's "Type27". "Type30" are dynamically hashed files.
Oh well, I only missed it by 2.
Thanks for catching that, Dan.
> Anyways...
>
> Assuming a clean & accurate &PARTFILES& (often not a good assumption,
I never trust it.
> and here's where it costs you a little something), you can use that to
> determine how many parts there are currently. The more accurate way is
> to query the dist file header (IIRC, it's an mv attribute returned by
> SYSTEM).
STATUS statement: STATUS FSTAT FROM file.var THEN ... ELSE ...
>From UV10 Basic pg 11-694:
Field Stored Value..............
Description...................................
24 Part numbers of part files Multivalued list. If file is a
belonging to a distributed part file, this field contains the
file part number, and field 25 is empty.
25 Pathnames of part files Multivalued list. If file is a part
belonging to a distributed file, this field is empty.
file
26 Filenames of part files Multivalued list. If file is a part
belonging to a distributed file, this field is empty.
file
Of course, the partfiles need not be defined in the VOC for a
distributed file to be valid.
But the VOC pointers would be needed for this proposed distributed
select, so one would have to come up with one's own convention.
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