標籤:MySQL 5.7.15 發布了。更新如下:安全事項:The validate_password plugin now supports the capability of rejecting passwords that match the current session user name, either forward or in reverse. To enable control over this capability, the plugin exposes a
標籤:介紹經常會在錯誤記錄檔中看到這個報錯,複製官方文檔的解釋。 Aborted_connects If a client is unable even to connect, the server increments the Aborted_connects status variable. Unsuccessful connection attempts can occur for the following
標籤:windows使用的zip包的mysql。配置成功後,root使用者沒有許可權,需要進行許可權分配。管理員運行cmd,執行以下命令,進入mysql。mysql -u root -p Passwd Passwd代表密碼,沒有的話就空著。然後執行以下命令,分配許可權。 mysql >grant all privileges on *.* to [email protected]"%" identified by "Passwd"; mysql >flush
標籤:一、SQL語句最佳化1-1.MySQL慢日誌1).慢日誌開啟方式和儲存格式 如何發現有問題的SQL? 使用Mysql慢日誌對有效率問題的SQL進行監控前期準備mysql> show variables like '%log_queri%';+-------------------------------+-------+| Variable_name | Value |+--------------------
標籤:MySQL 5.7.15 發布了。更新如下:安全事項: The validate_password plugin now supports the capability of rejecting passwords that match the current session user name, either forward or in reverse. To enable control over this capability, the
MySQL事務表和非事務表MySQL事務表和非事務表查看 max_binlog_stmt_cache_size 參數解釋時,有這麼一句話 If nontransactional statements within a transaction require more than this many bytes of memory, the server generates an error.那麼,什麼是 nontransactional statements ?在