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Support UNWIND in the lance-graph #75
Description
Currently, Cypher supports the UNWIND keyword
UNWIND [1, 2, 3] AS num
RETURN num
We want to support that in the lance-graph.
- One potential way to achieve this is by using the
unnestmethod in the DataFusion. E.g., the previous Cypher query can be translated to
SELECT unnest(make_array(1,2,3)) AS num
- Another potential approach is to use the UNION strategy (similar to the variable-length paths). E.g., the previous Cypher query can be translated to
SELECT 1 AS num
UNION ALL
SELECT 2 AS num
UNION ALL
SELECT 3 AS num
Activity
ChunxuTang commentedon Dec 25, 2025
Cc @leiyuou
prrao87 commentedon Jan 24, 2026
+1 from me for this one, this will be very useful for some benchmarks I plan on running between lance-graph and Kuzu on LDBC. Please let's prioritize this one where possible, thanks!
prrao87 commentedon Jan 25, 2026
This + #102 should be P0 IMO. Helps a huge swathe of Cypher + graph users. Thank you in advance!
leiyuou commentedon Jan 26, 2026
@prrao87 I will start to work on it this week
prrao87 commentedon Feb 2, 2026
We can close this as this has been merged.