Is there a better way to create a WHERE IN clause?

I need to create a query which uses WHERE IN, like:

SELECT * FROM X WHERE X.ID IN (a, b, c, d, ...)

Right now I am manually putting together the query as a string, which feels … not optimal.

let set (blobIds: BlobId list) =
    let whereIn =
        System.String.Join(", ", blobIds |> List.map (fun blobId -> sprintf "'%O'" blobId.Value))
        
    connect()
    |> Sql.query (sprintf "SELECT b.* FROM blob b WHERE b.id IN (%s)" whereIn)
    |> Sql.executeAsync map
    |> Sql.throwOrUnwrap

Is there a built-in way that I missed?

[Zaid-Ajaj]

Hi there,

Postgres has a built-in called ANY for these types of queries:

SELECT * FROM blob WHERE blob.id = ANY(@blobIds)

Use the function Sql.intArray to provide the integers of the @blobIds input parameter

[Zaid-Ajaj]

The only problem you might come across is that the analyzer doesn’t understand new functions that you add yourself and might think you are missing parameters. I don’t know if that is the case, but consider opening issues op those if they popup or just use Sql.skipAnalysis function when you don’t care 😉