From 55baefe4421414eb6fd21e331f1cfe4fc4b6e741 Mon Sep 17 00:00:00 2001
From: wirekang <wirekang@gmail.com>
Date: Fri, 9 Sep 2022 13:12:51 +0900
Subject: [PATCH] fix: crash if no tables in database

---
 src/parser/mysql.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/parser/mysql.ts b/src/parser/mysql.ts
index f1cb2d3..830f00c 100644
--- a/src/parser/mysql.ts
+++ b/src/parser/mysql.ts
@@ -36,6 +36,11 @@ async function getTableNames(
 ): Promise<string[]> {
   const query = await knex.raw(`show tables from \`${databaseName}\``);
   const [res] = await query;
+  if (!res) {
+    console.warn(`no tables in database ${databaseName}`);
+    return [];
+  }
+
   const key = Object.keys(res[0])[0];
   return res.map((r: any) => r[key]);
 }