@qstommyshu pointed out on #15567 (comment)

That tests that imply they are testing PREPARE are actually not (likely a mistake)

I actually looks to me like it is a mistake in the test 🤔

Perhaps the test should be something like

    let sql = "PREPARE SELECT id, age FROM person WHERE age BETWEEN $1 AND $2";

Instead of

    let sql = "SELECT id, age FROM person WHERE age BETWEEN $1 AND $2";

(maybe we can fix this in a follow on PR -- I will file a ticket)

Originally posted by @alamb in #15567 (comment)