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pgsql.go
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pgsql.go
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package pgsql
import (
"fmt"
"database/sql"
"github.com/andidroid/testgo/pkg/util"
_ "github.com/lib/pq" // sql behavior modified
)
var connection *sql.DB
func init() {
var err error
connection, err = InitDB()
util.CheckErr(err)
}
func InitDB() (*sql.DB, error) {
fmt.Println("create database connection")
var connectionString = fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=disable",
host, port, user, password, dbname)
// var err error
db, err := sql.Open("postgres", connectionString)
if err != nil {
fmt.Println("Error ", err)
}
return db, err
}
func main() {
}
const (
host = "127.0.0.1"
port = 5432
user = "postgres"
password = "postgres"
dbname = "osm"
schema = "public"
)
func GetConnection() (*sql.DB, error) {
return connection, nil
}
// return db
// age := 21
// rows, err := db.Query("SELECT name FROM users WHERE age = $1", age)
// var userid int
// err := db.QueryRow(`INSERT INTO users(name, favorite_fruit, age)
// VALUES('beatrice', 'starfruit', 93) RETURNING id`).Scan(&userid)
// if err != nil {
// return nil, err
// }
// //stmt, err := db.Prepare("CREATE TABLE IF NOT EXISTS web_url(ID SERIAL PRIMARY KEY, URL TEXT NOT NULL);")
// if err != nil {
// return nil, err
// }
// _, err = stmt.Exec()
// if err != nil {
// return nil, err
// }
// rows, err := db.Query("SELECT * FROM userinfo")
// checkErr(err)
// for rows.Next() {
// var uid int
// var username string
// var department string
// var created time.Time
// err = rows.Scan(&uid, &username, &department, &created)
// checkErr(err)
// fmt.Println("uid | username | department | created ")
// fmt.Printf("%3v | %8v | %6v | %6v\n", uid, username, department, created)
// }