Function quote_ident 

pub fn quote_ident(identifier: &str) -> String

Double-quote a PostgreSQL identifier, escaping any embedded double quotes.

use pgroles_core::sql::quote_ident;
assert_eq!(quote_ident("simple"), r#""simple""#);
assert_eq!(quote_ident("has\"quote"), r#""has""quote""#);
assert_eq!(quote_ident("user@example.com"), r#""user@example.com""#);