Question

我有一个具有属性时间的结构：

$inserted_id = null;    

if($mysqli->query("INSERT INTO users (id,customer) VALUES(null,'foo') ON DUPLICATE KEY UPDATE id = LAST_INSERT_ID(id)" )
{
    $inserted_id = $mysqli->insert_id; // Will return last insert ID in case of successful inserts as well as failed inserts due to duplicate key
}

将时间保存为：

type Basket struct {  
  ...  
  Created_at time.Time `db:"created_at"`
}

如果我使用Insert sql语句保存它，它会很好地节省SQLite3中的时间，但是当我使用以下选择所需的记录时：

basket.Created_at = time.Now().UTC()

它返回记录，其他属性已正确加载，时间属性为ret_basket := Basket{} err := database.DB.Get(&ret_basket, "SELECT id, ..., created_at FROM baskets WHERE user_id = ?", some_user_id)为ret_basket.Created_at

有什么建议吗？

Answer 1

Sqlite没有官方软件包所以我假设您正在使用https://github.com/mattn/go-sqlite3可能您的问题是数据库中错误created_at字段声明的结果，应该是DATETIME，因为下一个代码可以正常工作完全在我的机器上（我已经删除了所有错误检查）：

package main

import (
    "github.com/jmoiron/sqlx"
    _ "github.com/mattn/go-sqlite3"
    "log"
    "time"
)

type Post struct {
    Id      int64     `db:"post_id"`
    Created time.Time `db:"created"`
}

func main() {
    db, _ := sqlx.Connect("sqlite3", "post_db.db")
    db.MustExec("DROP TABLE IF EXISTS posts; CREATE TABLE posts (post_id INT, created DATETIME);")

    p1 := Post{Id: 1, Created: time.Now().UTC()}
    p2 := Post{}

    tx := db.MustBegin()
    tx.NamedExec("INSERT INTO posts (post_id, created) VALUES (:post_id, :created)", &p1)
    tx.Commit()

    db.Get(&p2, "SELECT post_id, created FROM posts WHERE post_id = $1", p1.Id)
    log.Println(p2.Created.Format("2006-01-02"))
}

struct Time属性不从Go sqlx库加载

1 个答案: