Process keyword fields correctly in FromRow macro

This PR fixes the the incorrect handling of keywords fields of a struct in the FromRow macro.
Currently a struct with a field like 'r#type' will try to read values from a column with the exact same name with r# prefix. With this change this field will now map to a database column with the correct name 'type' without the r# prefix.

sqlx-macros/src/derives/row.rs

@@ -74,7 +74,7 @@ fn expand_derive_from_row_struct(
 
     let reads = fields.iter().filter_map(|field| -> Option<Stmt> {
         let id = &field.ident.as_ref()?;
-        let id_s = id.to_string();
+        let id_s = id.to_string().trim_start_matches("r#").to_owned();
         let ty = &field.ty;
 
         Some(parse_quote!(

tests/postgres-derives.rs

@@ -132,3 +132,36 @@ async fn test_from_row() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+#[cfg(feature = "macros")]
+#[cfg_attr(feature = "runtime-async-std", async_std::test)]
+#[cfg_attr(feature = "runtime-tokio", tokio::test)]
+async fn test_from_row_with_keyword() -> anyhow::Result<()> {
+    use sqlx::prelude::*;
+
+    #[derive(Debug, sqlx::FromRow)]
+    struct AccountKeyword {
+        r#type: i32,
+        r#static: String,
+        r#let: Option<String>,
+        r#struct: Option<String>,
+        name: Option<String>,
+    }
+
+    let mut conn = new::<Postgres>().await?;
+
+    let account: AccountKeyword = sqlx::query_as(
+        r#"SELECT * from (VALUES (1, 'foo', 'bar', null, null)) accounts(type, static, let, struct, name)"#
+    )
+    .fetch_one(&mut conn)
+    .await?;
+    println!("{:?}", account);
+
+    assert_eq!(1, account.r#type);
+    assert_eq!("foo", account.r#static);
+    assert_eq!(None, account.r#struct);
+    assert_eq!(Some("bar".to_owned()), account.r#let);
+    assert_eq!(None, account.name);
+
+    Ok(())
+}