From b8e7179a855da125cebcbe6fcdbb435bf4733bae Mon Sep 17 00:00:00 2001
From: Charles Bochet <charlesBochet@users.noreply.github.com>
Date: Thu, 2 Apr 2026 13:57:27 +0200
Subject: [PATCH] Add missing index on viewField.viewFieldGroupId (#19253)
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## Summary

- Adds an index on `viewField.viewFieldGroupId` to fix a ~28s `DELETE
FROM core.viewFieldGroup WHERE workspaceId = $1` query observed in
production
- The slow query is triggered during workspace hard deletion
(`deleteWorkspaceSyncableMetadataEntities` in `workspace.service.ts`)
- Root cause: the FK constraint `viewField.viewFieldGroupId →
viewFieldGroup.id` with `ON DELETE SET NULL` forces PostgreSQL to
sequentially scan the entire `viewField` table for every deleted
`viewFieldGroup` row, because no index exists on the referencing column
- Uses `CREATE INDEX CONCURRENTLY` in the migration to avoid locking the
table on production
---
 ...view-field-group-id-index-on-view-field.ts | 19 +++++++++++++++++++
 .../view-field/entities/view-field.entity.ts  |  1 +
 2 files changed, 20 insertions(+)
 create mode 100644 packages/twenty-server/src/database/typeorm/core/migrations/common/1775129420309-add-view-field-group-id-index-on-view-field.ts

diff --git a/packages/twenty-server/src/database/typeorm/core/migrations/common/1775129420309-add-view-field-group-id-index-on-view-field.ts b/packages/twenty-server/src/database/typeorm/core/migrations/common/1775129420309-add-view-field-group-id-index-on-view-field.ts
new file mode 100644
index 0000000000..de55c0f4c1
--- /dev/null
+++ b/packages/twenty-server/src/database/typeorm/core/migrations/common/1775129420309-add-view-field-group-id-index-on-view-field.ts
@@ -0,0 +1,19 @@
+import { type MigrationInterface, type QueryRunner } from 'typeorm';
+
+export class AddViewFieldGroupIdIndexOnViewField1775129420309
+  implements MigrationInterface
+{
+  name = 'AddViewFieldGroupIdIndexOnViewField1775129420309';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `CREATE INDEX IF NOT EXISTS "IDX_VIEW_FIELD_VIEW_FIELD_GROUP_ID" ON "core"."viewField" ("viewFieldGroupId")`,
+    );
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `DROP INDEX IF EXISTS "core"."IDX_VIEW_FIELD_VIEW_FIELD_GROUP_ID"`,
+    );
+  }
+}
diff --git a/packages/twenty-server/src/engine/metadata-modules/view-field/entities/view-field.entity.ts b/packages/twenty-server/src/engine/metadata-modules/view-field/entities/view-field.entity.ts
index ee68fe648d..af2c36c46d 100644
--- a/packages/twenty-server/src/engine/metadata-modules/view-field/entities/view-field.entity.ts
+++ b/packages/twenty-server/src/engine/metadata-modules/view-field/entities/view-field.entity.ts
@@ -32,6 +32,7 @@ export type ViewFieldOverrides = {
 @Index('IDX_VIEW_FIELD_WORKSPACE_ID_VIEW_ID', ['workspaceId', 'viewId'])
 @Index('IDX_VIEW_FIELD_VIEW_ID', ['viewId'])
 @Index('IDX_VIEW_FIELD_FIELD_METADATA_ID', ['fieldMetadataId'])
+@Index('IDX_VIEW_FIELD_VIEW_FIELD_GROUP_ID', ['viewFieldGroupId'])
 @Index(
   'IDX_VIEW_FIELD_FIELD_METADATA_ID_VIEW_ID_UNIQUE',
   ['fieldMetadataId', 'viewId'],