Jim,

This works quite well. Thank you.

And thanks to all others who replied.

--
Bill Drago
Senior Engineer
L3 Narda-MITEQ
435 Moreland Road
Hauppauge, NY 11788
631-272-5947 / William.Drago at L-3COM.com


> -----Original Message-----
> From: sqlite-users-bounces at mailinglists.sqlite.org [mailto:sqlite-
> users-bounces at mailinglists.sqlite.org] On Behalf Of Jim Morris
> Sent: Tuesday, April 07, 2015 10:07 AM
> To: sqlite-users at mailinglists.sqlite.org
> Subject: Re: [sqlite] Transpose selected rows into columns
>
> You might try
>
> select SerialNumber, V0, V5, V5-V0
> from
> (select SerialNumber,
>     max(case Stim when 'V0' then Resp else null end) V0,
>     max(case Stim when 'V5' then Resp else null end) V5 from MyTable
> group by SerialNumber)
>
>
>
> On 4/7/2015 6:58 AM, Drago, William @ CSG - NARDA-MITEQ wrote:
> > Igor,
> >
> > Your solution works well. What I can't figure out is how to
> efficiently create a column representing V5-V0.
> >
> > SerialNumber |  V0   |  V5  | Vdiff
> > -------------|-------|------|-------
> > 123          |  0.2  |  0.6 |  0.4
> >
> >
> > This is what I'm using, but it takes twice as long:
> >
> > select SerialNumber,
> >
> >     max(case Stim when 'V0' then Resp else null end) V0,
> >     max(case Stim when 'V5' then Resp else null end) V5,
> >
> >     (max(case Stim when 'V0' then Resp else null end) -
> >     max(case Stim when 'V5' then Resp else null end)) Vdiff
> >
> > from MyTable group by SerialNumber;
> >
> >
> > There must be a more efficient way. (I tried V5-V0 and assigning
> > intermediate values to variables but got nothing but errors.)
> >
> > Thanks,
> > --
> > Bill Drago
> > Senior Engineer
> > L3 Narda-MITEQ
> > 435 Moreland Road
> > Hauppauge, NY 11788
> > 631-272-5947 / William.Drago at L-3COM.com
> >
> >
> >
> >> -----Original Message-----
> >> From: sqlite-users-bounces at mailinglists.sqlite.org [mailto:sqlite-
> >> users-bounces at mailinglists.sqlite.org] On Behalf Of Igor Tandetnik
> >> Sent: Friday, March 27, 2015 3:20 PM
> >> To: sqlite-users at mailinglists.sqlite.org
> >> Subject: Re: [sqlite] Transpose selected rows into columns
> >>
> >> On 3/27/2015 11:48 AM, Drago, William @ CSG - NARDA-MITEQ wrote:
> >>> I want the rows containing V0 and V5 to become columns like this:
> >>>
> >>> SerialNumber |  V0   |  V5
> >>> -------------|-------|-------
> >>> 123          | 0.136 | 0.599
> >>> 124          | 0.126 | 0.587
> >>> 125          | 0.119 | 0.602
> >> select SerialNumber,
> >>     max(case Stim when 'V0' then Resp else null end) V0,
> >>     max(case Stim when 'V5' then Resp else null end) V5 from MyTable
> >> group by SerialNumber;
> >>
> >> --
> >> Igor Tandetnik
> >>
> >> _______________________________________________
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> >> sqlite-users at mailinglists.sqlite.org
> >> http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
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