diff --git a/src/misc/strobf.h b/src/misc/strobf.h
index f834330..a581bec 100644
--- a/src/misc/strobf.h
+++ b/src/misc/strobf.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <cstdio>
+#include <string>
 #include <cstring>
 #include <array>
 #include <string_view>
diff --git a/src/query/command3.h b/src/query/command3.h
index ce96e75..1c5cc7f 100644
--- a/src/query/command3.h
+++ b/src/query/command3.h
@@ -330,10 +330,11 @@ namespace ts {
                     if(it + 1 != this->bulks.end())
                         result.append("|");
                 }
-                if(!with_empty && result.ends_with('|'))
+                if(!with_empty && !result.empty() && result.back() == '|') {
                     this->builded = result.substr(0, result.length() - 1);
-                else
+                } else {
                     this->builded = result;
+                }
                 this->flag_changed = false;
                 return this->builded.value();
             }
diff --git a/src/sql/SqlQuery.h b/src/sql/SqlQuery.h
index ae8da15..1259c9d 100644
--- a/src/sql/SqlQuery.h
+++ b/src/sql/SqlQuery.h
@@ -262,7 +262,7 @@ namespace sql {
                 friend class ::sql::command;
                 friend class ::sql::model;
             public:
-                explicit command_base(nullptr_t) : _data{nullptr} {}
+                explicit command_base(std::nullptr_t) : _data{nullptr} {}
 
                 command_base(SqlManager* handle, const std::string &sql, std::initializer_list<variable> values) {
                     assert(handle);
@@ -329,7 +329,7 @@ namespace sql {
             template<typename... Ts>
             model(SqlManager* handle, const std::string &sql, Ts... vars) : model(handle, sql, {}) { values(vars...); }
 
-            explicit model(nullptr_t) : command_base{nullptr} {};
+            explicit model(std::nullptr_t) : command_base{nullptr} {};
             //model(const model& v) : command_base{v} {};
             //model(model&& v) noexcept  : command_base{std::forward<model>(v)} {};
             ~model() override = default;
diff --git a/src/sql/mysql/MySQL.cpp b/src/sql/mysql/MySQL.cpp
index 42a70c2..3b9aa4e 100644
--- a/src/sql/mysql/MySQL.cpp
+++ b/src/sql/mysql/MySQL.cpp
@@ -707,7 +707,7 @@ result MySQLManager::executeCommand(std::shared_ptr<CommandData> _ptr) {
     if(!sql::mysql::create_bind(bind_parameter_memory.ptr, mapped_variables))
         return {ptr->sql_command, -1, "Failed to allocate bind memory!"};
 
-    ResultBind bind_result_data{.field_count = 0, .memory = nullptr, .descriptors = nullptr};
+    ResultBind bind_result_data{0, nullptr, nullptr};
 
     auto connection = this->next_connection();
     if(!connection) return {ptr->sql_command, -1, "Could not get a valid connection!"};
@@ -761,7 +761,7 @@ result MySQLManager::queryCommand(shared_ptr<CommandData> _ptr, const QueryCallb
     FreeGuard<BindMemory> bind_parameter_memory{nullptr};
     if(!sql::mysql::create_bind(bind_parameter_memory.ptr, mapped_variables)) return {ptr->sql_command, -1, "Failed to allocate bind memory!"};
 
-    ResultBind bind_result_data{.field_count = 0, .memory = nullptr, .descriptors = nullptr};
+    ResultBind bind_result_data{0, nullptr, nullptr};
 
     auto connection = this->next_connection();
     if(!connection) return {ptr->sql_command, -1, "Could not get a valid connection!"};