> when i
create a recursive query and try to
add the distances i get
a message:
> ERROR: recursive query
"edges" column 3 has type numeric(7,3)
in
non-recursive term but type numeric
overall.
> My exercise is almost
identical to the example in the docs:
>
WITH RECURSIVE search_graph(id, link,
data, depth, path,
cycle) AS (
> SELECT g.id,
g.link, g.data, 1,
>
ARRAY[g.id],
> false
> FROM graph g
> UNION ALL
>
SELECT g.id, g.link,
>
sg.data + g.data, -- altered
section, data is
numeric(7,3)
> sg.depth +
1,
> path || g.id,
> g.id = ANY(path)
> FROM graph g,
search_graph
sg
> WHERE g.id = sg.link
AND
NOT cycle
> )
> SELECT
* FROM search_graph;
I believe the solution is rather
simple; just
cast(sg.data + g.data to
numeric(7,3))
Alban Hertroys
----------
Please ignore that last message from me, it does work. Thank you for the answer!
Karl
