I think it can not be done with default PostgreSQL functions and
operators, because you must compare two different columns of two rows
depending which row is on either side of the comparision.
But I think you can do this with the following steps:
1) create a new type as a 4-tupel of start_lat,
I think it can not be done with default PostgreSQL functions and
operators, because you must compare two different columns of two rows
depending which row is on either side of the comparision.
But I think you can do this with the following steps:
1) create a new type as a 4-tupel of start_lat,
On Fri, Mar 27, 2009 at 6:10 AM, Dominik Piekarski
d.piekar...@vivawasser.de wrote:
Oh, actually every row of the same id-range has the same start_lat/start_lng
coordinates as the predecessors end_lat/end_lng coordinates. But the
question remains the same. Is there a way to do something like
Oh, actually every row of the same id-range has the same
start_lat/start_lng coordinates as the predecessors end_lat/end_lng
coordinates. But the question remains the same. Is there a way to do
something like ORDER BY (start_lat = end_lat AND start_lng = end_lng) ?
Or maybe another way to
