From b6874f52f6d8e5228b57842a9844eba28f72e9e6 Mon Sep 17 00:00:00 2001
From: Adria Navarro <adria@budibase.com>
Date: Wed, 16 Oct 2024 16:16:39 +0200
Subject: [PATCH] Fix many-to-one

---
 packages/backend-core/src/sql/sql.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/packages/backend-core/src/sql/sql.ts b/packages/backend-core/src/sql/sql.ts
index 662558415e..949d7edf1b 100644
--- a/packages/backend-core/src/sql/sql.ts
+++ b/packages/backend-core/src/sql/sql.ts
@@ -510,18 +510,19 @@ class InternalBuilder {
             }
           })
         } else {
+          const toKey = `${toAlias}.${relationship.to}`
           const foreignKey = `${fromAlias}.${relationship.from}`
           // "join" to the main table, making sure the ID matches that of the main
           subQuery = subQuery.where(
-            `${toAlias}.${relationship.to}`,
+            toKey,
             "=",
             mainKnex.raw(this.quotedIdentifier(foreignKey))
           )
 
           query = query.where(q => {
-            q.whereExists(whereCb(updatedKey, subQuery))
+            q.whereExists(whereCb(updatedKey, subQuery.clone()))
             if (allowEmptyRelationships) {
-              q.orWhereNull(foreignKey)
+              q.orWhereNotExists(subQuery)
             }
           })
         }