From 413698510363d371f1c9a9beb9b95f5b74ce85b7 Mon Sep 17 00:00:00 2001
From: onmax <maximogarciamtnez@gmail.com>
Date: Wed, 17 Dec 2025 09:05:40 +0100
Subject: [PATCH] fix(db): pass mode to drizzle for mysql

---
 src/db/setup.ts     | 7 ++++---
 src/types/config.ts | 8 ++++++++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/db/setup.ts b/src/db/setup.ts
index 2be1dac5..c392c104 100644
--- a/src/db/setup.ts
+++ b/src/db/setup.ts
@@ -206,7 +206,7 @@ async function generateDatabaseSchema(nuxt: Nuxt, hub: ResolvedHubConfig) {
 }
 
 async function setupDatabaseClient(nuxt: Nuxt, hub: ResolvedHubConfig) {
-  const { driver, connection } = hub.db as ResolvedDatabaseConfig
+  const { dialect, driver, connection, mode } = hub.db as ResolvedDatabaseConfig
 
   // For types, d1-http uses sqlite-proxy
   const driverForTypes = driver === 'd1-http' ? 'sqlite-proxy' : driver
@@ -236,10 +236,11 @@ declare module 'hub:db' {
   // Setup Drizzle ORM
 
   // Generate simplified drizzle() implementation
+  const modeOption = dialect === 'mysql' ? `, mode: '${mode || 'default'}'` : ''
   let drizzleOrmContent = `import { drizzle } from 'drizzle-orm/${driver}'
 import * as schema from './db/schema.mjs'
 
-const db = drizzle({ connection: ${JSON.stringify(connection)}, schema })
+const db = drizzle({ connection: ${JSON.stringify(connection)}, schema${modeOption} })
 export { db, schema }
 `
 
@@ -368,7 +369,7 @@ function getDb() {
   if (!_db) {
     const hyperdrive = process.env.${bindingName} || globalThis.__env__?.${bindingName} || globalThis.${bindingName}
     if (!hyperdrive) throw new Error('${bindingName} binding not found')
-    _db = drizzle({ connection: hyperdrive.connectionString, schema })
+    _db = drizzle({ connection: hyperdrive.connectionString, schema${modeOption} })
   }
   return _db
 }
diff --git a/src/types/config.ts b/src/types/config.ts
index 17cfa79f..e6332478 100644
--- a/src/types/config.ts
+++ b/src/types/config.ts
@@ -179,6 +179,14 @@ export type DatabaseConfig = {
    * @default true
    */
   applyMigrationsDuringBuild?: boolean
+  /**
+   * MySQL mode for Drizzle ORM relational queries.
+   * Only applicable when dialect is 'mysql'.
+   *
+   * @default 'default'
+   * @see https://orm.drizzle.team/docs/rqb#modes
+   */
+  mode?: 'default' | 'planetscale'
 }
 
 export type ResolvedDatabaseConfig = DatabaseConfig & {