Fix the example code in README

[dyoshikawa]

This .await? in the example code looks unnecessary.

Example

$ rustc -V
rustc 1.43.0 (4fb7144ed 2020-04-20)

# Cargo.toml
[dependencies]
tokio = { version = "0.2", features = ["full"] }
sqlx = { version = "0.3", default-features = false, features = [ "runtime-tokio", "macros", "mysql" ] }

// main.rsuse sqlx::mysql::MySqlPool;use sqlx::Cursor;#[tokio::main]asyncfnmain() -> Result<(), sqlx::Error>{// Create a connection poollet pool = MySqlPool::new("mysql://root:secret@localhost:3306/foo").await.unwrap();let email = "test@example.com";// Make a simple query to return the given parameterletmut cursor = sqlx::query("SELECT * FROM users WHERE email = ?").bind(email).fetch(&pool).await.unwrap();whileletSome(row) = cursor.next().await? {// map the row into a user-defined domain type}Ok(())}

Compilation Error

error[E0277]: the trait bound `sqlx_core::mysql::cursor::MySqlCursor<'_, '_>: std::future::Future` is not satisfied
--> src/main.rs:11:22
|
11 | let mut cursor = sqlx::query("SELECT * FROM users WHERE email = ?")
| ______________________^
12 | | .bind(email)
13 | | .fetch(&pool).await.unwrap();
| |___________________________^ the trait `std::future::Future` is not implemented for `sqlx_core::mysql::cursor::MySqlCursor<'_, '_>`

[mehcode]

Good catch. fetch returns a stream which can't be awaited directly.