Fix clickhouse connection 2 (#12010)

Revert changes in #12006 as it might still be handy to have the DB
auto-created (e.g. for test or self-hosting users), but if there is a
permission exception we will just ignore it and assume the database
exist in that case

packages/twenty-server/src/database/clickHouse/migrations/run-migrations.ts

@@ -20,6 +20,23 @@ const clickHouseUrl = () => {
   );
 };
 
+async function ensureDatabaseExists() {
+  const [url, database] = clickHouseUrl().split(/\/(?=[^/]*$)/);
+  const client = createClient({
+    url,
+  });
+
+  try {
+    await client.command({
+      query: `CREATE DATABASE IF NOT EXISTS "${database}"`,
+    });
+  } catch (error) {
+    // It may fail due to permissions, but the database already exists
+  } finally {
+    await client.close();
+  }
+}
+
 async function ensureMigrationTable(client: ClickHouseClient) {
   await client.command({
     query: `
@@ -58,6 +75,8 @@ async function runMigrations() {
   const dir = path.join(__dirname);
   const files = fs.readdirSync(dir).filter((f) => f.endsWith('.sql'));
 
+  await ensureDatabaseExists();
+
   const client = createClient({
     url: clickHouseUrl(),
     clickhouse_settings: {