Vision & Colour Music Festival, a homegrown electronic music festival that previously brought acts such as Anyma, Fisher, Illenium, and Swedish House Mafia to China, is returning to Zhuhai, China, ...

Vision & Colour Music Festival, a homegrown electronic music festival that previously brought acts such as Anyma, Fisher, Illenium, and Swedish House Mafia to China, is returning to Zhuhai, China, ...

这个extension带有四个数据类型，多个函数，支持多样化的操作符。 对于树形结构的数据处理可见一斑。 之前我的一位同事在设计数据结构的时候有用到这种树形数据，当时是用PostgreSQL的递归查询来满足的需求。 如果使用ltree extension的话，会方便很多。 2. 在 ...