Function quaint::ast::count

pub fn count<'a, T>(expr: T) -> Count<'a> where
    T: Into<DatabaseValue<'a>>, 

Count of the underlying table where the given expression is not null.

let query = Select::from_table("users").value(count(asterisk()));
let (sql, _) = Sqlite::build(query);
assert_eq!("SELECT COUNT(*) FROM `users`", sql);