From 1eb2307fed412287ee53c9552fb543a5caed0d68 Mon Sep 17 00:00:00 2001
From: mike12345567 <me@michaeldrury.co.uk>
Date: Mon, 20 Feb 2023 15:35:14 +0000
Subject: [PATCH] Fix for #9749 - static formulas would sometimes attempt to
 update the same row multiple times, filter down to just the unique row list
 which requires updating.

---
 packages/server/src/api/controllers/row/staticFormula.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/server/src/api/controllers/row/staticFormula.ts b/packages/server/src/api/controllers/row/staticFormula.ts
index 47a5af8f5a..6ba44dc23a 100644
--- a/packages/server/src/api/controllers/row/staticFormula.ts
+++ b/packages/server/src/api/controllers/row/staticFormula.ts
@@ -38,7 +38,13 @@ export async function updateRelatedFormula(
         if (!relatedRows[relatedTableId]) {
           relatedRows[relatedTableId] = []
         }
-        relatedRows[relatedTableId] = relatedRows[relatedTableId].concat(field)
+        // filter down to the rows which are not already included in related
+        const currentIds = relatedRows[relatedTableId].map(row => row._id)
+        const uniqueRelatedRows = field.filter(
+          (row: Row) => !currentIds.includes(row._id)
+        )
+        relatedRows[relatedTableId] =
+          relatedRows[relatedTableId].concat(uniqueRelatedRows)
       }
     }
     for (let tableId of table.relatedFormula) {