From 996202a6bd656e4dbb8590c320efc9653fdfb6c8 Mon Sep 17 00:00:00 2001
From: Ulf Gebhardt <ulf.gebhardt@webcraft-media.de>
Date: Tue, 24 Aug 2021 17:56:29 +0200
Subject: [PATCH] if the old migration table is present selecting `fileName`
 will result in an SQL error

---
 backend/src/index.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/backend/src/index.ts b/backend/src/index.ts
index 981731c67..6e51ed2f4 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -22,9 +22,10 @@ const DB_VERSION = '0001-init_db'
 async function main() {
   // check for correct database version
   const con = await connection()
-  const [rows] = await con.query(`SELECT fileName FROM migrations ORDER BY version DESC LIMIT 1;`)
+  const [rows] = await con.query(`SELECT * FROM migrations ORDER BY version DESC LIMIT 1;`)
   if (
     (<RowDataPacket>rows).length === 0 ||
+    !(<RowDataPacket>rows)[0].fileName ||
     (<RowDataPacket>rows)[0].fileName.indexOf(DB_VERSION) === -1
   ) {
     throw new Error(`Wrong database version - the backend requires '${DB_VERSION}'`)