How can I execute SQL queries in Go using a package?

How can I execute SQL queries in Go using a package?

You can use the database/sql package in Go to execute SQL queries. First, you need to import the package and a driver for your database.

What are the steps to set it up?

1. Import the database/sql package and the driver (e.g., github.com/lib/pq for PostgreSQL). 2. Open a database connection using sql.Open(). 3. Use db.Query() or db.Exec() to execute your SQL queries.

Can you show me a code example?

Sure! Here's a simple example:

package main

import (
    "database/sql"
    _ "github.com/lib/pq"
    "log"
)

func main() {
    db, err := sql.Open("postgres", "user=username dbname=mydb sslmode=disable")
    if err != nil {
        log.Fatal(err)
    }
    defer db.Close()

    _, err = db.Exec("INSERT INTO users(name) VALUES($1)", "John Doe")
    if err != nil {
        log.Fatal(err)
    }
}

What if I want to handle errors?

You can check for errors after each database operation. For example, after db.Exec(), you can handle the error like this:

if err != nil {
    log.Printf("Error executing query: %v", err)
}