use tokio_postgres::types::ToSql;
use futures::StreamExt;

let params: Vec<String> = vec![
    "first param".into(),
    "second param".into(),
];
let mut it = Box::pin(client.query_raw(
    "SELECT foo FROM bar WHERE biz = $1 AND baz = $2",
    params.iter().map(|p| p as &dyn ToSql),
).await?);

while let Some(row) = it.next().await.transpose()? {
    let foo: i32 = row.get("foo");
    println!("foo: {}", foo);
}

use postgres::types::ToSql;
use fallible_iterator::FallibleIterator;

let params: Vec<String> = vec![
    "first param".into(),
    "second param".into(),
];
let mut it = client.query_raw(
    "SELECT foo FROM bar WHERE biz = $1 AND baz = $2",
    params.iter().map(|p| p as &dyn ToSql),
)?;

while let Some(row) = it.next()? {
    let foo: i32 = row.get("foo");
    println!("foo: {}", foo);
}