From acc50f23f35c35fa9caf25cf40f1e3c5d13ce4c3 Mon Sep 17 00:00:00 2001
From: "zhangkun9038@dingtalk.com" <zhangkun9038@dingtalk.com>
Date: Fri, 14 Jul 2023 17:29:53 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E9=87=8F=E5=BC=8F=E5=A4=87=E4=BB=BD?=
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---
 backUpIncremental.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/backUpIncremental.sh b/backUpIncremental.sh
index 3ce1b25..e09bb27 100755
--- a/backUpIncremental.sh
+++ b/backUpIncremental.sh
@@ -14,6 +14,12 @@ LAST_BACKUP=$(cat "$backUpPath/last_backup.txt")
 LAST_BINLOG=$(echo "$LAST_BACKUP" | awk '{print $1}')
 LAST_POSITION=$(echo "$LAST_BACKUP" | awk '{print $2}')
 
+# 如果是第一次运行，设置初始值
+if [[ -z "$LAST_BACKUP" ]]; then
+    LAST_BINLOG="none"
+    LAST_POSITION="0"
+fi
+
 # 获取当前binlog文件名和位置
 CURRENT_BINLOG=$(mysql -u$userName -p$password -h$host -e "SHOW MASTER STATUS" | awk '{print $1}')
 CURRENT_POSITION=$(mysql -u$userName -p$password -h$host -e "SHOW MASTER STATUS" | awk '{print $2}')