@vrom911 Yeah, this is a difficult problem. The same problem is for the executeMany function. That's why we didn't manage to implement it in the mysql-not-so-simple library. The problem is in the fact, as you correctly noticed, that returning and executeMany work with multiple rows, not a single one. So they allow to INSERT/UPDATE many values at once. And with plain returning we would write code like this:

returning conn [sql|...|] [User "foo" 42, User "bar" 69]

But with named version we need to write like this:

```haskell
returning conn [sql|...|] [ ["name" =? "foo", age =? 42], ["name" =? "bar", age =? 69] ]

The only way to implement this that I managed to think of is to pass a function a -> [NamedParam] as an argument so the calls will look like this:

returningNamed
    conn
    [sql|...|] 
    (\User{..} -> [ "name" =? userName, "age" =? userAge ])
    someUsers

But I'm not sure whether this is actually works.

Another possible way could be:

returningNamed
    conn
    [sql|...|]
    [ "name" =? [user1, user2]
    , "age" =? [age1, age2]
    ]

Slightly easier but introduces an illegal state where the lists are not of the same length.