Ne function:
signature:
pgr_contractionDeadEnd([Edges SQL](file:///home/vicky/pgrouting/pgrouting/cvvergara/build/doc/html/en/pgr_contractionDeadEnd.html#edges-sql), [options])
options: [directed, forbidden_vertices]
Returns set of (type, id, contracted_vertices, source, target, cost)
Example execution:
SELECT * FROM pgr_contractionDeadEnd(
'SELECT id, source, target, cost, reverse_cost FROM edges',
directed => false);
type | id | contracted_vertices | source | target | cost
------+----+---------------------+--------+--------+------
v | 4 | {2} | -1 | -1 | -1
v | 6 | {5} | -1 | -1 | -1
v | 7 | {1,3} | -1 | -1 | -1
v | 8 | {9} | -1 | -1 | -1
v | 14 | {13} | -1 | -1 | -1
(5 rows)
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