From 044d8dc538a92e104b79612eb4d77ca3cc3a663e Mon Sep 17 00:00:00 2001
From: Jan Prochazka <jan.prochazka@gmail.com>
Date: Sun, 17 May 2020 08:12:56 +0200
Subject: [PATCH] fix

---
 packages/engines/mysql/index.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/packages/engines/mysql/index.js b/packages/engines/mysql/index.js
index 103b1bdac..c32baf6c7 100644
--- a/packages/engines/mysql/index.js
+++ b/packages/engines/mysql/index.js
@@ -11,9 +11,11 @@ const dialect = {
 };
 
 function extractColumns(fields) {
-  return fields.map((col) => ({
-    columnName: col.name,
-  }));
+  if (fields)
+    return fields.map((col) => ({
+      columnName: col.name,
+    }));
+  return null;
 }
 
 /** @type {import('@dbgate/types').EngineDriver} */