See Choosing a TDS protocol version and History of TDS Versions. The function used for the TDS message handler. Options are "notice" and "blackhole." With the "notice" option, TDS messages are turned ...

This SQL injection cheat sheet contains examples of useful syntax that you can use to perform a variety of tasks that often arise when performing SQL injection attacks.

我们不难发现,当我们最该字段进行排序操作的时候,Mysql会根据该字段的设计的长度进行内存预估, 如果设计过大的可变长度, 会导致内存预估的值超出sort_buffer_size的大小, 导致mysql采用磁盘临时文件排序,最终影响查询性能。 select * from category_info_varchar_50 where name ...