MySQL 5.6所有系统变量 地址:...which enables you to modify operation of the server without having to stop and restart it.Setting the global value of a system variable requires the SUPER privilege.For some system variables,...
官方重点说明,设置global变量的时候,只对后面连接进来的session生效,对当前session和之前的session不生效 接下来,我们好好测试下 2.2 系统变量的Scope 1.Global:全局级别 set global variables=xx;正确 set variables=xx;报错(因为是...
OFF} Controls whether SQL*Plus lists the text of a SQL statement or PL/SQL command before and after SQL*Plus replaces substitution variables with values.SET WRA[P]{ON?OFF} Controls whether SQL*Plus truncates the display of...