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                      mysql常用命令

                      select version()
                      查找數據文件存放路徑
                      show global variables like "%datadir%"

                      services.msc打開服務可重啟mysql


                      mysql提示got timeout reading communication packets的解決方法
                      show GLOBAL variables like '%timeout%'


                      set global interactive_timeout=400;
                      set global wait_timeout=400;


                      show GLOBAL variables like '%log_warning%'
                      set global log_warning=1;
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