diff --git a/packages/drizzle/src/queries/sanitizeQueryValue.ts b/packages/drizzle/src/queries/sanitizeQueryValue.ts
index 0e2ceedbd1f..eea9ae1842e 100644
--- a/packages/drizzle/src/queries/sanitizeQueryValue.ts
+++ b/packages/drizzle/src/queries/sanitizeQueryValue.ts
@@ -280,6 +280,22 @@ export const sanitizeQueryValue = ({
     }
   }
 
+  if ((field.type === 'relationship' || field.type === 'upload') && Array.isArray(formattedValue)) {
+    if (operator === 'equals') {
+      return {
+        columns: formattedColumns,
+        operator: 'in',
+        value: formattedValue,
+      }
+    } else if (operator === 'not_equals') {
+      return {
+        columns: formattedColumns,
+        operator: 'not_in',
+        value: formattedValue,
+      }
+    }
+  }
+
   return {
     columns: formattedColumns,
     operator,
diff --git a/test/fields/int.spec.ts b/test/fields/int.spec.ts
index 26412ed76f6..23b6a2f9289 100644
--- a/test/fields/int.spec.ts
+++ b/test/fields/int.spec.ts
@@ -4149,6 +4149,44 @@ describe('Fields', () => {
         expect(noMatchDocIDs).toContain(relDoc1.id)
         expect(noMatchDocIDs).not.toContain(relDoc2.id)
       })
+
+      it('should not throw when querying hasMany relationship with equals array', async () => {
+        const text1 = await payload.create({
+          collection: 'text-fields',
+          data: { text: 'Text 1' },
+        })
+
+        const relDoc = await payload.create({
+          collection: 'relationship-fields',
+          data: {
+            relationshipHasMany: [text1.id],
+            relationship: { relationTo: 'text-fields', value: text1.id },
+          },
+        })
+        createdIDs.push(relDoc.id)
+
+        const equalsResult = await payload.find({
+          collection: 'relationship-fields',
+          where: {
+            relationshipHasMany: {
+              equals: [text1.id],
+            },
+          },
+        })
+
+        expect(equalsResult.docs.some((doc) => doc.id === relDoc.id)).toBe(true)
+
+        const notEqualsResult = await payload.find({
+          collection: 'relationship-fields',
+          where: {
+            relationshipHasMany: {
+              not_equals: [text1.id],
+            },
+          },
+        })
+
+        expect(notEqualsResult.docs.some((doc) => doc.id === relDoc.id)).toBe(false)
+      })
     })
   })