修复获取字段名失败问题

src/db/mysql.cpp

@@ -450,7 +450,7 @@ ylib::mysql::result::result(void* handle):m_handle(handle)
     for (uint32 i = 0; i < RESULT_SET->getMetaData()->getColumnCount(); i++)
     {
         ylib::mysql::field field;
-        field.name = RESULT_SET->getMetaData()->getColumnName(i + 1).c_str();;
+        field.name = RESULT_SET->getMetaData()->getColumnLabel(i + 1);
         field.type_name = strutils::change_case(RESULT_SET->getMetaData()->getColumnTypeName(i + 1).c_str(), false);
         field.index = i;
         m_fields.push_back(field);
@@ -759,57 +759,4 @@ ylib::buffer ylib::mysql::result::get_blob(const std::string& name)
         throw ylib::exception(e.what());
     }
 }
-
-//ylib::json ylib::mysql::result::to_json()
-//{
-//    CHECK_SQL_PPST;
-//    struct __Column
-//    {
-//        std::string name;
-//        std::string type_name;
-//    };
-//    std::map<int, __Column> column_names;
-//    ylib::json result;
-//    try
-//    {
-//        // 取列名称数组
-//        {
-//            for (uint32 i = 0; i < RESULT_SET->getMetaData()->getColumnCount(); i++)
-//            {
-//                __Column c;
-//                c.name = RESULT_SET->getMetaData()->getColumnName(i+1).c_str();;
-//                c.type_name = strutils::change_case(RESULT_SET->getMetaData()->getColumnTypeName(i+1).c_str(), false);
-//                column_names[i] = c;
-//                std::cout << c.name.c_str() << "\t" << c.type_name.c_str() << std::endl;
-//            }
-//                
-//        }
-//        for (uint32 i = 0; i < row_count(); i++)
-//        {
-//            ylib::json line;
-//            next();
-//            for (uint32 c = 0; c < field_count(); c++)
-//            {
-//                if (column_names[c].type_name == "int")
-//                    line[column_names[c].name] = get_int32(c+1);
-//                else if (column_names[c].type_name == "varchar")
-//                    line[column_names[c].name] = get_string(c+1);
-//                else if (column_names[c].type_name == "int unsigned")
-//                    line[column_names[c].name] = get_uint32(c+1);
-//                else if (column_names[c].type_name == "bigint")
-//                    line[column_names[c].name] = get_int64(c+1);
-//                else
-//                    abort();
-//            }
-//            result.push_back(line);
-//        }
-//        
-//        //return RESULT_SET->getDouble(name.c_str());
-//    }
-//    catch (const sql::SQLException& e)
-//    {
-//        throw ylib::exception(e.what());
-//    }
-//    return result;
-//}
 #endif