fix get fields function

include/sqlConnection.h

@@ -1,3 +1,9 @@
+#define DEBUG
+
+#ifdef DEBUG
+#include <iostream>
+#endif
+
 #include <optional>
 #include <ranges>
 #include <algorithm>
@@ -10,13 +16,22 @@
 
 #include "util.h"
 
+template<typename T>
+void log(T msg){
+#ifdef DEBUG
+    std::cout<<msg<<std::endl;
+#endif
+}
+
 using util::_support_string;
 
+[[maybe_unused]]
 struct RowItem{
     std::vector<std::string_view> row;
 };
 
 //Not Implemented;
+[[maybe_unused]]
 class Result{
     std::vector<std::string_view> fields;
     std::map<std::string_view, std::vector<std::string_view>> datas;
@@ -98,13 +113,12 @@ public:
     std::vector<std::string_view> get_fields(std::string_view table_name){
         std::vector<std::string_view> really_result;
         std::string command;
-        std::format_to(std::back_inserter(command), "SHOW COLUMNS FROM %s;", table_name);
+        std::format_to(std::back_inserter(command), "SHOW COLUMNS FROM {};", table_name);
         auto _ = mysql_query(&mysql_client, command.c_str());
         if(auto mysql_result = mysql_store_result(&mysql_client); mysql_result != nullptr){
             auto field_length = mysql_num_fields(mysql_result);
-            auto row = mysql_fetch_row(mysql_result);
-            for(int i=0; i<field_length; i++){
-                really_result.emplace_back(row[i]);
+            while(auto row = mysql_fetch_row(mysql_result)){
+                really_result.emplace_back(row[0]);
             }
             mysql_free_result(mysql_result);
         }
@@ -143,7 +157,7 @@ public:
         return false;
     }
     
-    std::vector<std::string_view> GetTables(){
+    std::vector<std::string_view> get_tables(){
         std::vector<std::string_view> really_result;
         mysql_query(&mysql_client, "SHOW TABLES;");
         if(auto mysql_result = mysql_store_result(&mysql_client); mysql_result != nullptr){