perf: simplification of mass update query

Author: andrew-james-dev

frameworks/Rust/axum/src/common/mod.rs

@@ -17,10 +17,9 @@ pub const SELECT_WORLD_BY_ID: &str =
 pub const SELECT_ALL_CACHED_WORLDS: &str =
     "SELECT id, randomnumber FROM world ORDER BY id";
 #[allow(dead_code)]
-pub const UPDATE_WORLDS: &str = "WITH vals AS (SELECT * FROM UNNEST($1::int[], $2::int[]) AS v(id, rnum))
-    UPDATE world SET randomnumber = new.rnum FROM
-  (SELECT w.id, v.rnum FROM world w INNER JOIN vals v ON v.id = w.id ORDER BY w.id FOR UPDATE) AS new
-  WHERE world.id = new.id";
+pub const UPDATE_WORLDS: &str = r#"UPDATE world SET randomnumber = new.rnum FROM
+    (SELECT * FROM UNNEST($1::int[], $2::int[]) AS v(id, rnum)) AS new
+WHERE world.id = new.id"#;
 
 /// Return the value of an environment variable.
 #[allow(dead_code)]
@@ -48,4 +47,4 @@ pub fn random_ids(rng: &mut SmallRng, count: usize) -> Vec<i32> {
     rng.sample_iter(Uniform::new(1, 10_001))
         .take(count)
         .collect()
-}
+}