如何使用postgres crate接收来自PostgreSQL的表修改事件？

[dependencies]
postgres = "0.17"

use postgres::{Client, NoTls};

fn main() {
    let mut client = Client::connect("postgresql://username:password@localhost/database", NoTls)
        .expect("Failed to connect to the database");

    // 在这里执行后续的操作
}

use postgres::{Client, NoTls};

fn main() {
    let mut client = Client::connect("postgresql://username:password@localhost/database", NoTls)
        .expect("Failed to connect to the database");

    // 订阅表修改事件
    client.batch_execute("
        LISTEN table_name;
    ").expect("Failed to subscribe to table modifications");

    // 在这里执行后续的操作
}

use postgres::{Client, NoTls};

fn main() {
    let mut client = Client::connect("postgresql://username:password@localhost/database", NoTls)
        .expect("Failed to connect to the database");

    // 订阅表修改事件
    client.batch_execute("
        LISTEN table_name;
    ").expect("Failed to subscribe to table modifications");

    // 处理表修改事件
    loop {
        let notification = client
            .notifications()
            .next()
            .expect("Failed to receive table modification event");

        println!("Received table modification event: {:?}", notification.payload());

        // 在这里编写处理表修改事件的逻辑
    }
}