从 postgres db 接收 IP 地址的所有匹配网络

Question

I have a postgres db with a table networks which includes a column network of type cidr. I want to queue all networks which contain an IP address I provide. I couldnt find how to do this.

Currently I pull all networks, and then use the include? method IPAddr class provides:

Network.all.each{|row| pp row if row.network.include?("10.176.0.5")}

Answer 1

您可以使用为 cidr 类型定义的 postgres 的>>=运算符（包括或等于）或>> （包括）：

Network.where(['network >> ?', "10.176.0.5"])