Loadrunner测试数据库性能

// 再次查找数据，应该为空了，因为前面的事务更新了标志
rc = mysql_query(db_connection， "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");
if (rc != 0) {
    lr_error_message("%s"， mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
query_result = mysql_use_result(db_connection);
if (query_result == NULL) {
    lr_error_message("%s"， mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
result_row = (char **)mysql_fetch_row(query_result);
if (result_row == NULL) {
    lr_output_message("Result set is empty as expected");
    mysql_free_result(query_result);
} else {
    lr_error_message("Did not expect the result set to contain any rows");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}

// 删除数据
lr_save_string(lr_eval_string("DELETE FROM test_data WHERE order_id = '{paramOrderID}'")，"paramDeleteQuery");
rc = mysql_query(db_connection， lr_eval_string("{paramDeleteQuery}"));
if (rc != 0) {
    lr_error_message("%s"， mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 释放MySQL资源
mysql_close(db_connection);
return 0;
}