In an attempt to throw the authorities off his trail, jcxxr@yahoo.com (Jean-Christophe Roux) transmitted:
> Hi, I have found Oracle analytic functions very useful. They are so
> convenient to calculate running totals, moving averages, ranks,
> order data in buckets... and so on. I have found in the archives a
> few threads that deal with the replication of some of those
> functions on PostgreSQL but I don't think I have the skills to write
> by myself such a package (I mean algorithms can get pretty
> complicated). It seems that PostgreSQL does not offer the equivalent
> (maybe because they do not belong to standard SQL?). If I am wrong
> thanks for letting me know where in the docs I can find details.
> Otherwise, are you aware of an open-source project (maybe a
> corporation) offering a set of equivalent functions ? Many thanks
There is material in the SQL2003 standard on analytic functions; I'm
not sure if Oracle's such functions are standards-conformant or not.
It is likely that some could be implemented in a near-standard
fashion; it simply hasn't yet happened.
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