On 9/17/2015 12:25 PM, Bistrais, Bob wrote:
Hello,
I am trying to work with pgRouting’s pgr_kdijkstraCost to find multiple
paths. The input requires an array of target nodes enclosed by brackets
. But when I generate the array in Postgres, the array is enclosed in
braces {}. So I can’t get the algorithm to work.
Can anyone suggest how to make this array work with the
pgr_kdijkstraCost algorithm?
Hi Bob,
I would be helpful if you showed you sql that didn't work. But here is a go in a vacuum:
Define a static array in postgres with:
array[item, item, item, ...]
'{item, item, item, ...}'::integer -- cast string to integer array
Define an array as an aggregrate:
select array_agg(id) from some_table;
Combining these:
select * from pgr_kdijkstraCost(..., (select array_agg(id) from some_table), ...);
select * from pgr_kdijkstraCost(..., array[1,2,3,27,35,...], ...);
select * from pgr_kdijkstraCost(..., '{1,2,3,27,35,...}'::integer, ...);
-Steve