Gregory Stark wrote:
> Is it the hierarchical query ability you're looking for or pivot?
> The former we are actually getting in 8.4.
>
> AFAIK even in systems with pivot you still have to
> declare a fixed list of columns in advance anyways.
> Do you see a system where it works differently?
MS-Access SQL has a TRANSFORM clause that allows for crosstab queries
without the need to know in advance the number of columns:
http://msdn.microsoft.com/en-us/library/bb208956.aspx
As for Oracle, it wasn't possible until recently but now 11g has the
PIVOT clause:
http://www.oracle.com/technology/pub/articles/oracle-database-11g-top-f
eatures/11g-pivot.html
In contrast of these clauses, PG's contrib/tablefunc looks more limited
and quite harder to use.
Best regards,
--
Daniel
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