Re: Using SQL to "mix" the records in a file

[Alan Shore <AlanShore@xxxxxxxx>]

Charles - BRILLIANT
Jeff Young had shown how to use the partition and row_number and I was
trying to fit my file layout into what he had supplied, when your e-mail
arrived
Works beautifully (and MUCH MUCH simpler than what I was heading to)
Thanks


Alan Shore
Programmer/Analyst, Direct Response
E:AShore@xxxxxxxx
P:(631) 200-5019
C:(631) 880-8640
"If you're going through Hell, keep going" - Winston Churchill


                                                                       
             Charles Wilt                                              
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             08/09/2010 03:48                                      Subject
             PM                        Re: Using SQL to "mix" the records
                                       in a file                       
                                                                       
             Please respond to                                         
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Still not clear but...take a look at the results of this...

with tbl as (select row_number() over (partition by RCDTYPE order by
RCDTYPE, RCDTIMSTMP) as rowNbr, a.*
                 from myfile A
                )
select * from tbl
order by rowNbr

HTH,
Charles

On Mon, Aug 9, 2010 at 2:30 PM, Alan Shore <AlanShore@xxxxxxxx> wrote:
> As soon as I pressed Enter, I wasn't too sure that I had explained myself
> So here is my second attempt
> The file contains 1,000 records, by timestamp, but as it happens, the
first
> 500 are record types A and the second 500 are record types B (by
timestamp)
> I need to change the timestamp so that the 2 types are mingled
> A
> B
> A
> B
> A
> B
>
> by timestamp
>
> Hopefully that makes it a little clearer
>
> Again, thanks in advance
>
>
>
> Alan Shore
> Programmer/Analyst, Direct Response
> E:AShore@xxxxxxxx
> P:(631) 200-5019
> C:(631) 880-8640
> "If you're going through Hell, keep going" - Winston Churchill
>
>
>
>             Alan Shore
>             <AlanShore@xxxxxx
>             om>                                                        To
>             Sent by:                  midrange-l@xxxxxxxxxxxx
>             midrange-l-bounce                                          cc
>             s@xxxxxxxxxxxx
>                                                                   Subject
>                                       Using SQL to "mix" the records in a
>             08/09/2010 01:53          file
>             PM
>
>
>             Please respond to
>             Midrange Systems
>                 Technical
>                Discussion
>             <midrange-l@midra
>                 nge.com>
>
>
>
>
>
>
>
> Morning all
> sorry about the subject line, but I couldn't think of a better one
> Here is my predicament
>
> I have a test file with thousands of records, but basically 2 types
> Record type A
> Record type B
>
> The key to this file is a timestamp field, however, the file is basically
> one batch of record type A, followed by a batch of record type B (based
on
> timestamp)
> How can I "mix/mingle" these types so that the sequence (by timestamp) is
> A
> B
> A
> B
> A
>
> it can be a group of A, a group of B, a group of A, a group of B
> As long as there is a mixture
> I've thought about this all morning to no avail, so if someone has any
> ideas , it would be MUCH appreciated
>
> Thanks in advance
>
>
> Alan Shore
> Programmer/Analyst, Direct Response
> E:AShore@xxxxxxxx
> P:(631) 200-5019
> C:(631) 880-8640
> "If you're going through Hell, keep going" - Winston Churchill
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