From 210c801839d081f1169a2c1eaf55b12b0213fbdf Mon Sep 17 00:00:00 2001
From: zhiru <zhiru.zhu@zilliz.com>
Date: Sun, 30 Jun 2019 14:05:45 +0800
Subject: [PATCH] update

Former-commit-id: 0eb9b5f027c49b5734411b5ae4ad9e384129a134
---
 cpp/src/db/MySQLMetaImpl.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cpp/src/db/MySQLMetaImpl.cpp b/cpp/src/db/MySQLMetaImpl.cpp
index 7acff7ab05..0b0cc01e5d 100644
--- a/cpp/src/db/MySQLMetaImpl.cpp
+++ b/cpp/src/db/MySQLMetaImpl.cpp
@@ -1247,7 +1247,7 @@ namespace meta {
 //                }
 
                 Query getSizeQuery = connectionPtr->query();
-                getSizeQuery << "SELECT SUM(size) AS sum " <<
+                getSizeQuery << "SELECT IFNULL(SUM(size),0) AS sum " <<
                              "FROM TableFiles " <<
                              "WHERE file_type <> " << std::to_string(TableFileSchema::TO_DELETE) << ";";