From 0fa48d3fc18abae773b043990bf9dcf8fbb80108 Mon Sep 17 00:00:00 2001
From: dextmorgn <dexxterrmorgan@proton.me>
Date: Sun, 15 Feb 2026 18:08:59 +0100
Subject: [PATCH] feat(migrations): backfill_edge_sketch_id

---
 neo4j-migrations/004_backfill_edge_sketch_id.cypher | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 neo4j-migrations/004_backfill_edge_sketch_id.cypher

diff --git a/neo4j-migrations/004_backfill_edge_sketch_id.cypher b/neo4j-migrations/004_backfill_edge_sketch_id.cypher
new file mode 100644
index 0000000..2277e85
--- /dev/null
+++ b/neo4j-migrations/004_backfill_edge_sketch_id.cypher
@@ -0,0 +1,8 @@
+// 004_backfill_edge_sketch_id.cypher
+// Backfill sketch_id on relationships that are missing it.
+// Copies sketch_id from the source node onto the relationship.
+// Idempotent: only touches relationships where sketch_id IS NULL.
+
+MATCH (a)-[r]->(b)
+WHERE r.sketch_id IS NULL AND a.sketch_id IS NOT NULL
+SET r.sketch_id = a.sketch_id;