目录开启UUID方法结果展示离线安装时，一般有四个包，都安装的话，只需要开启uuid的使用即可，如果工具包(即&nbwww.devze.comsp;PostgreSQL11-contrib）没有安装的话，需要单独安装一次，再进行开启。
I wish to plot the time variation开发者_如何学C of my y-axis variable using Matplotlib. This is no problem for continuously discrete data, however how should this be tackled for non-continuous data.
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