FIND PATH Syntax

FIND PATH statement can be used to get the shortest path and all paths.

FIND SHORTEST | ALL PATH FROM <vertex_id_list> TO <vertex_id_list> OVER <edge_type_list> [UPTO <N> STEPS]

SHORTEST is the keyword to find the shortest path.

ALL is the keyword to find all paths.

<vertex_id_list>::=[vertex_id [, vertex_id]] is the vertex id list,multiple ids should be separated with commas, and $-and $var are supported.

<edge_type_list> is the edge type list, multiple edge types should be separated with commas, and * can be referred as all edge types.

<N> is hop number, and the default value is 5.

  • When source and destination vertices are id lists, it means to find the shortest path from any source vertices to the destination vertices.
  • There may be cycles when searching all paths.
  • FIND PATH does not support searching with property filtering.
  • FIND PATH does not support searching with specified direction.
  • FIND PATH is sing process, so it hurts the memory resource.

Examples

Path is displayed as id <edge_name, rank> id in console.

nebula> FIND SHORTEST PATH FROM 100 to 200 OVER *;
=============================
| _path_ |
=============================
| 100 <serve,0> 200
-----------------------------

nebula>FIND ALL PATH FROM 100 to 200 OVER *;
=============================================================================================================
| _path_ |
=============================================================================================================
| 100 < serve,0> 200
-------------------------------------------------------------------------------------------------------------
| 100 <follow,0> 101 < serve,0> 200
-------------------------------------------------------------------------------------------------------------
| 100 <follow,0> 102 < serve,0> 200
-------------------------------------------------------------------------------------------------------------
| 100 <follow,0> 106 < serve,0> 200
-------------------------------------------------------------------------------------------------------------