From eb99bf97dcf4e06c2ffdbb8cc1f57d96046bad17 Mon Sep 17 00:00:00 2001
From: nichenqin <nichenqin@hotmail.com>
Date: Thu, 8 Jan 2026 15:47:18 +0800
Subject: [PATCH] fix(v2): show link relation triggers in explain

---
 .../src/utils/ComputedUpdateReasonBuilder.ts  | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/packages/v2/command-explain/src/utils/ComputedUpdateReasonBuilder.ts b/packages/v2/command-explain/src/utils/ComputedUpdateReasonBuilder.ts
index 6eee188a1..05333cefc 100644
--- a/packages/v2/command-explain/src/utils/ComputedUpdateReasonBuilder.ts
+++ b/packages/v2/command-explain/src/utils/ComputedUpdateReasonBuilder.ts
@@ -123,8 +123,25 @@ export const buildComputedUpdateReason = (
     }
   }
 
+  const implicitLinkSeedIds = new Set<string>();
+  for (const fieldId of targetFieldIds) {
+    const meta = fieldsById.get(fieldId.toString());
+    if (!meta || meta.type !== 'link') {
+      continue;
+    }
+    const targetId = fieldId.toString();
+    if (seedFieldIdSet.has(targetId)) {
+      implicitLinkSeedIds.add(targetId);
+    }
+    const symmetricFieldId = meta.options?.symmetricFieldId;
+    if (symmetricFieldId && seedFieldIdSet.has(symmetricFieldId)) {
+      implicitLinkSeedIds.add(symmetricFieldId);
+    }
+  }
+
+  const effectiveSeedIds = new Set<string>([...seededDependencyIds, ...implicitLinkSeedIds]);
   const seedFields: ComputedUpdateSeedField[] = changedFieldIds
-    .filter((fieldId) => seededDependencyIds.has(fieldId.toString()))
+    .filter((fieldId) => effectiveSeedIds.has(fieldId.toString()))
     .map((fieldId) => {
       const meta = fieldsById.get(fieldId.toString());
       const tableId = meta?.tableId ?? plan.seedTableId;