Window functions in gremlin

Is there any way to apply window functions in gremlin queries I need to convert the following SQL query into gremlin.
SELECT ass.id, fin.id, ass.display_label, fin.finding_status CASE WHEN SUM( CASE WHEN fin.finding_status = 'Closed' THEN 0 ELSE 1 END ) OVER (PARTITION BY ass.id) > 0 THEN 'Failed' ELSE 'Passed' END as assmnt_status FROM "sds_datalake"."ei_publish_cloud_3"."findings" as fin LEFT JOIN "sds_datalake"."ei_publish_cloud_3"."findigs_associated_with_assessments" as ass_fin on fin.p_id = ass_fin.source_p_id LEFT JOIN "sds_datalake"."ei_publish_cloud_3"."assessments" as ass on ass_fin.target_p_id = ass.p_id`
1 Reply
triggan
triggan6mo ago
Interesting, as I really don't think of window functions that much in the graph world. It's typically more related to tabular or time-series data. Can you explain a bit more about what you're attempting to do with the data in a graph as opposed to it being in a relational database?
There are iterative aggregation patterns in graph. In Gremlin, there is the sack() step that allows you to gather up a set of values as a traversal is executed and then act on that "sack" of values at the end of the query. https://kelvinlawrence.net/book/Gremlin-Graph-Guide.html#sackintro
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