psql connection example

psql.go

package main

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

func main() {
	db, err := sql.Open("postgres", "host=/var/run/postgresql/ sslmode=disable dbname=entities")
	if err != nil {
		fmt.Printf("%v", err)
	}

	rows, err := db.Query("SELECT * FROM entities")
	if err != nil {
		log.Fatal(err)
	}
	defer rows.Close()

	for rows.Next() {
		var num int
		if err := rows.Scan(&num); err != nil {
			log.Fatal(err)
		}
		fmt.Printf("num: %v", num)
	}
}