Connecting to a postgres database in Go Lang

postgres_connect.go

package main
// go get github.com/lib/pq
import (
	_ "github.com/lib/pq"
	"database/sql"
	"fmt"
)

func main() {
	db, err := sql.Open("postgres", "user=marcmaron password=boomerlives! dbname=wtfpodcast")
	if err != nil { fmt.Println("Connection Error: ", err); return }
	defer db.Close()

	rows, err := db.Query("SELECT * FROM posts where id = 4")
	if err != nil { fmt.Println("Query Error: ", err); return }

	columns, err := rows.Columns()
	if err != nil { fmt.Println("Columns Error: ", err); return }

  values := make([]interface{}, len(columns))
  valuePtrs := make([]interface{}, len(columns))
  for i, _ := range columns { valuePtrs[i] = &values[i] }

	for rows.Next() {
		if err := rows.Scan(valuePtrs...); err != nil {
    	fmt.Println("Scan Error: ", err); return
    }

    for i, column_name := range columns {
    	var v interface{}
      b, ok := values[i].([]byte);
      if (ok) {
        v = string(b)
      } else {
        v = values[i]
      }
      fmt.Println(column_name, v)
    }
  }
}