Find path between two vertex over edges with specific attribute

[hamidehhhs]

I have create a graph that some attributes on its edges.
I am wondering to find path between two vertex over edges filtered on its attribute.
To do so I try this query
FIND ALL PATH FROM <vertex_id1> TO <vertex_id2> OVER edge.attribute1 == "text";

but I faced 'SyntaxError'

Is it possible to filter edges with attribute on path queries?

[wey-gu]

Dear @hamidehhhs ,

FIND query doesn't support where clause, a valid query is like:

FIND ALL PATH FROM <vertex_id1> TO <vertex_id2> OVER edge;

ref: https://docs.nebula-graph.io/2.0.1/3.ngql-guide/16.subgraph-and-path/2.find-path/

To filter attribute, you could use:

• GO https://docs.nebula-graph.io/2.0.1/3.ngql-guide/7.general-query-statements/3.go/
• MATCH https://docs.nebula-graph.io/2.0.1/3.ngql-guide/7.general-query-statements/2.match/#match_variable-length_paths

[wey-gu]

Dear @hamidehhhs ,

Also, thanks to @nevermore3 , the PR(#1091) to support WHERE CLAUSE is WIP.

BR//Wey

[hamidehhhs]

Dear @wey-gu

Thanks for your reply. So you mean now it is possible to filter edges attributes in find path algorithms now ?

[wey-gu]

Dear @wey-gu

Thanks for your reply. So you mean now it is possible to filter edges attributes in find path algorithms now ?

Dear @hamidehhhs, sorry I meant it's not yet ready but is working in progress.

[wey-gu]

update:

• property filter in edge: merged add path filter #1091
• property filter in vertex: will be started https://github.com/vesoft-inc/nebula-graph/issues/1128

[CPWstatic]

I'll close it first since we had another related issues. Now we have support for filtering the paths through edge properties, hope it is helpful for you.