How do I batch sql statements with package database/sql

Question

How do I batch sql statements with Go\'s database/sql package?

In Java I would do it like this :

// Create a prepared statement
String sql = \"INSERT         


        

Answer 1

I got pq.CopyIn working, and it's actually 2.4x faster than the string values/args approach (which was super helpful and an elegant solution, btw, so thank you!)

I inserted 10 million test values of int, varchar into a struct, and loaded it with the following function. I'm kinda new to GoLang, so bear with me ...

func copyData(client *client.DbClient, dataModels []*dataModel) error{
    db := *client.DB
    txn, err := db.Begin()
    if err != nil {
        return err
    }
    defer txn.Commit()

    stmt, err := txn.Prepare(pq.CopyIn("_temp", "a", "b"))
    if err != nil {
        return(err)
    }

    for _, model := range dataModels{
        _, err := stmt.Exec(model.a, model.b)
        if err != nil {
            txn.Rollback()
            return err
        }
    }

    _, err = stmt.Exec()
    if err != nil {
        return err
    }

    err = stmt.Close()
    if err != nil {
        return err
    }

    return nil
    }

`

Elapsed (stringValues/args): 1m30.60s.

Elapsed (copyIn): 37.57s.