On Fri, Jun 22, 2012 at 01:16:02PM +0200, Petr Jake?? <petr.ja...@tpc.cz> wrote:
> > SELECT CAST(t1.id as TEXT) + ':' + CAST(t2.id as TEXT) AS id, ...
> >
> >
> Just wondering what is delimiter helpful for? Just to recognize t1.id and
> t2.id later on?
Yes. And to distinguish "1:11" and "11:1" - without a delimiter you
get two different rows with the same id; with pure integer id's of a
limited range that can be fixed in a different way:
SELECT t1.id*1000000000 + t2.id, ...
but the idea is the same.
Oleg.
--
Oleg Broytman http://phdru.name/ p...@phdru.name
Programmers don't die, they just GOSUB without RETURN.
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