Am 01.08.2011 um 21:37 schrieb Merlin Moncure:
I think David is probably right and this can be handled in pure sql
simply and easily (perhaps in a function, perhaps not). The SPI
interface is great, but the sql and plpgsql languages are very
powerful and should always be preferred over a C
Am 26.07.2011 um 00:40 schrieb Florian Pflug:
On Jul25, 2011, at 22:31 , Achim Domma wrote:
Am 25.07.2011 um 14:48 schrieb Florian Pflug:
A more low-level API is provided by {heap,index}_{beginscan,endscan},
heap_{insert,update,delete} and index_insert. However, correct handling of
On Aug1, 2011, at 13:23 , Achim Domma wrote:
I have tables which store two integer IDs and a floating point rank. So the
table MyTable might have these columns:
EntityID - int
PropertyID - int
Rank - float
My algorithm needs to retrieve EntityID-Rank-Pairs for some given
PropertyIDs.
On Mon, Aug 01, 2011 at 01:23:26PM +0200, Achim Domma wrote:
Am 26.07.2011 um 00:40 schrieb Florian Pflug:
On Jul25, 2011, at 22:31 , Achim Domma wrote:
Am 25.07.2011 um 14:48 schrieb Florian Pflug:
A more low-level API is provided by
{heap,index}_{beginscan,endscan},
On Mon, Aug 1, 2011 at 11:04 AM, David Fetter da...@fetter.org wrote:
SQL is Turing-complete, so the chances are excellent that it's
possible to express that algorithm in it. ;)
Look into common table expressions for iteration/recursion, and
windowing functions, commonly used for time series.
On Mon, Aug 1, 2011 at 10:18 AM, Robert Haas robertmh...@gmail.com wrote:
On Mon, Aug 1, 2011 at 11:04 AM, David Fetter da...@fetter.org wrote:
SQL is Turing-complete, so the chances are excellent that it's
possible to express that algorithm in it. ;)
Look into common table expressions for
Hi,
I have read http://www.postgresql.org/docs/9.1/static/xfunc-c.html and my idea
is, to write a C function which returns a set of rows. To generate the result
set, I would like to access indexes directly using the information I found at
http://www.postgresql.org/docs/9.1/static/indexam.html.
On Jul25, 2011, at 13:40 , Achim Domma wrote:
I have read http://www.postgresql.org/docs/9.1/static/xfunc-c.html and my
idea is, to write a C function which returns a set of rows. To generate the
result set, I would like to access indexes directly using the information I
found at
Am 25.07.2011 um 14:48 schrieb Florian Pflug:
A more low-level API is provided by {heap,index}_{beginscan,endscan},
heap_{insert,update,delete} and index_insert. However, correct handling of
transactions using this API isn't easy - for example, to update a row you'd
first have to find the
On Jul25, 2011, at 22:31 , Achim Domma wrote:
Am 25.07.2011 um 14:48 schrieb Florian Pflug:
A more low-level API is provided by {heap,index}_{beginscan,endscan},
heap_{insert,update,delete} and index_insert. However, correct handling of
transactions using this API isn't easy - for example,
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