From f41a834b92db595ebd95393319642f2c43aa773a 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: 8c424908b64391585954bd72c65eb8572df4915b
---
 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 328e27f4d7..4d5fc00050 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) << ";";