golang sqlx库 事务报错

Question

1.golang使用sqlx的事务时，报错
2.代码如下

package main

import (
    "log"
    _ "github.com/lib/pq" // PostgreSQL
    "github.com/jmoiron/sqlx"
    "github.com/lib/pq"
    "fmt"
)

type Test struct {
    Id   int           `json:"id" db:"id" form:"id"`
    Name string        `json:"name" db:"name" form:"name"`
    Role pq.Int64Array `json:"role" db:"role" form:"role"`
}

func main() {
    db, err := sqlx.Connect("postgres", "user=postgres password=*** dbname=*** sslmode=disable")
    if err != nil {
        log.Panicln(err)
    }
    defer db.Close()
    db.SetMaxOpenConns(1)
    tx, err := db.Beginx()
    test := Test{Name: "name", Role: []int64{1, 2, 3}}
    _, err1 := tx.NamedQuery(`INSERT  INTO test(name,role) VALUES (:name,:role)returning id`, test)
    fmt.Println(err1)
    _, err1 = tx.NamedQuery(`INSERT  INTO test(name,role) VALUES (:name,:role)returning id`, test)
    fmt.Println(err1)
    _, err1 = tx.NamedQuery(`INSERT  INTO test(name,role) VALUES (:name,:role)returning id`, test)
    fmt.Println(err1)
    _, err1 = tx.NamedQuery(`INSERT  INTO test(name,role) VALUES (:name,:role)returning id`, test)
    fmt.Println(err1)
    _, err1 = tx.NamedQuery(`INSERT  INTO test(name,role) VALUES (:name,:role)returning id`, test)
    fmt.Println(err1)
    tx.Commit()
}

3.输出如下：

<nil>
pq: unexpected Parse response 'D'
driver: bad connection
driver: bad connection
driver: bad connection

Process finished with exit code 0

4.把namedquery()换成namedexec()是可以通过的，但是我想拿到第一条语句返回的主键，才能进行后面的操作。

5.求大神解答，谢谢

Answer 1

没直接看出毛病，又懒得写代码验证，试着猜一下

1、把db.SetMaxOpenConns(1)去掉
2、sql里面的values()returning id，加个空格values() returing id