From 04e79672367027784a9863fc35469f9621d2b609 Mon Sep 17 00:00:00 2001
From: hugy <504650082@qq.com>
Date: Mon, 20 Feb 2023 10:38:22 +0800
Subject: [PATCH] =?UTF-8?q?=E9=94=99=E8=AF=AF=E6=9F=A5=E8=AF=A2=E5=AF=BC?=
 =?UTF-8?q?=E8=87=B4=E7=9A=84=E5=B4=A9=E6=BA=83?=
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---
 src/db_operation.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/db_operation.cc b/src/db_operation.cc
index daecc1e..580d424 100644
--- a/src/db_operation.cc
+++ b/src/db_operation.cc
@@ -97,10 +97,15 @@ int Select(DWORD db_hanle, const char *sql,
   if (status == 0) {
     return 0;
   }
+  if(data.size() == 0){
+    return 1;
+  }
   vector<string> index;
-  for (size_t i = 0; i < data[0].size(); i++)
+  for (size_t i = 0; i < data[0].size(); i++){
     index.push_back(data[0][i].column_name);
+  }
   query_result.push_back(index);
+ 
   for (auto it : data) {
     vector<string> item;
     for (size_t i = 0; i < it.size(); i++) {