Re: Separating data sets in a table

On Mon, 2002-08-26 at 10:46, Andreas Tille wrote:
> On 26 Aug 2002, Oliver Elphick wrote:
>
> > Select from the temporary table all items that satisfy the
> > constraints, insert them into the real table and delete them from
> > the temporary table:
> >
> > BEGIN;
> > INSERT INTO tablename (SELECT * FROM temptable WHERE ...);
> > DELETE FROM temptable WHERE ...;
> > COMMIT;
> >
> > All good data should now be in place. The temporary table should
> > now contain only those items that do not satisfy the constraints for
> > the real table.
> This was in my first atempt here.
> The problem I have is that I need a JOIN to a further table and
> I've got errors from the parser which let me guess that joins are not
> allowed in INSERT statements ... at least I do not know how to do it
> right if it should be possible.

A natural join seems to work fine:

bray=# insert into junk (select b.* from batch as b, product as p
where b.product = p.id and p.eancode is not null);
INSERT 0 7552

I don't have any earlier messages from this thread; what was the syntax
you were trying to use?

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight, UK
http://www.lfix.co.uk/oliver
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