Christopher Kings-Lynne wrote:
>
> > BTW, looking at the SQL99 standard, I see that you can do
> >
> > UPDATE table SET ROW = foo WHERE ...
> >
> > where foo is supposed to yield a row of the same rowtype as table
> > --- I didn't dig through the spec in detail, but I imagine foo can
> > be a sub-select. I don't care a whole lot for that, though, since it
> > would be a real pain in the neck if you're not updating all the columns.
> > You'd have to go
> >
> > UPDATE table SET ROW = (SELECT table.a, table.b, foo.x, ... FROM foo)
>
> How is the Informix syntax any better?
With Informix, you specify the columns you want updated in parens,
rather than saying ROW. Does the spec allow a list of columns after
ROW? That would be nice, like Informix. I doubt many folks update all
the columns.
-- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610)
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