Python 如何实现类似 go 语言 sqlx 的 NamedXXX 操作? - V2EX
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Python 如何实现类似 go 语言 sqlx 的 NamedXXX 操作?

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  •   craftx 2023-07-23 22:01:50 +08:00 1374 次点击
    这是一个创建于 884 天前的主题,其中的信息可能已经有所发展或是发生改变。

    抄下 sqlx 文档的代码

     // 定义结构体 type Person struct { FirstName string `db:"first_name"` LastName string `db:"last_name"` Email string `db:"email"` } // 创建对象 personStructs := Person{FirstName: "Ardie", LastName: "Savea", Email: "[email protected]"} // 插入到数据库 // sqlx 将 sql 语言中的“:field”替换为对象字段的值 _, err = db.NamedExec(`INSERT INTO person (first_name, last_name, email) VALUES (:first_name, :last_name, :email)`, personStructs) 
    6 条回复    2023-07-24 21:13:56 +08:00
    NoOneNoBody
        1
    NoOneNoBody  
       2023-07-23 22:09:39 +08:00
    dataclass + f-format/string.Template ?
    sql 执行需要另外实现
    Vegetable
        2
    Vegetable  
       2023-07-23 22:40:27 +08:00
    https://pymysql.readthedocs.io/en/latest/modules/cursors.html#pymysql.cursors.Cursor.execute

    execute("INSERT INTO person (first_name, last_name, email)
    VALUES (%(first_name)s, %(last_name)s, %(email)s)", args=dict(first_name="",last_name="",email=""))
    只需要解决 class to dict 就行了,方案多的是

    有点原始了,这不就是 ORM 吗?这种不上不下的操作是什么特殊的需求
    knightdf
        3
    knightdf  
       2023-07-24 09:12:49 +08:00   1
    随便上个 ORM 都比这个强吧?轻量的 peewee ,或者直接 sqlalchemy
    craftx
        4
    craftx  
    OP
       2023-07-24 19:58:14 +08:00
    @NoOneNoBody 直接格式化 sql ,不太好吧?
    craftx
        5
    craftx  
    OP
       2023-07-24 19:58:38 +08:00
    @knightdf peewee sqlalchemy 都是侵入式的吧?
    NoOneNoBody
        6
    NoOneNoBody  
       2023-07-24 21:13:56 +08:00
    @craftx #4
    生成一个 sql 语句而已
    值是执行时另外传的
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