X has columns zip & crrt, just like crrt_net_non.  These form a composite
key identifying groups within x.  A value "53001.R501" would be an
example...53001 being the zip code and R501 being the carrier route.  There
are 52 rows in X that have the key 53001.R501.  A calculation determined
that I need 42 rows from that key and saved the result in crrt_net_non, the
row looking like "53001.R501.52.6.46.42".  What I need is a sql function
that can iterate over crrt_net_non, then grab the rows from X, "53001.R501"
being first key, sort them into an internal group sequence, then update a
code of the first 42 rows of that sorted group, and then doing this until
crrt_net_non is exhausted.

On Wed, Oct 14, 2015 at 4:03 PM, Igor Tandetnik <igor at tandetnik.org> wrote:

> On 10/14/2015 4:49 PM, Don V Nielsen wrote:
>
>> What am I looking to do?  Using a table X, I've built a summary table,
>> calculating a value called net_non_pieces.  net_not_pieces is a qty of
>> rows
>> from a group rows that needs to be recoded to a different value.  So what
>> I
>> want to do is for each group in X, look up the calculated value in
>> crrt_net_non, then grab the first net_non_pieces (sequenced, of course)
>> and
>> apply a code to those rows, leaving the remaining rows alone.
>>
>
> It might help if you show the definition of X, a sample of data in it, and
> the desired result of the query over that data. I, for one, have difficulty
> following your description.
> --
> Igor Tandetnik
>
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