Gorm Scan 未绑定到结构

Question

我想获得原始 sql 查询的结果。查询如下

res := []response.UserListByDivisionMember{}
db.Raw(`SELECT 
    parentPosFlat.posParentCode AS departmentFlatId,
    employee.gsId,
    employee.email,
    CONCAT(employee.firstname,
            ', ',
            employee.lastName) AS userName,
    division.externalCode AS departmentId,
    division.name AS departmentName,
    position.code AS positionId,
    position.name AS positionName,
    gsRoom.name AS room,
    gsRoom.id AS roomId
FROM
    division
        JOIN
    position AS parentPosition ON division.externalCode = parentPosition.department
        JOIN
    positionInPositionFlat AS parentPosFlat ON parentPosition.code = parentPosFlat.posParentCode
        JOIN
    position ON parentPosFlat.posChildCode = position.code
        JOIN
    employee ON position.code = employee.position
        LEFT JOIN
    gsRoom ON employee.gsRoomId = gsRoom.id
WHERE
    division.externalCode = ?`, divisionId).Scan(&res)

查询结果有这个结构

我想将结果绑定到以下结构：

type UserListByDivisionMember struct {
    DepartmentFlatId string `json:"departmentFlatId"`
    GsId             string `json:"gsId"`
    Email            string `json:"email"`
    UserName         string `json:"userName"`
    DepartmentId     string `json:"departmentId"`
    DepartmentName   string `json:"departmentName"`
    PositionId       string `json:"positionId"`
    PositionName     string `json:"positionName"`
    Room             string `json:"room"`
    RoomId           string `json:"roomId"`
}

执行查询的扫描操作后，我可以在控制台中看到查询返回了 50 行，这是正确的，但是当我调试应用程序时，结果仅包含结构中的电子邮件地址字段。我已经尝试将名称从小写更改为大写，但仍然显示相同的结果。

Answer 1

您的结构字段名称和列名称不匹配。

根据 the docs:

Column names will be the field’s name is lower snake case.

您有两个选择：

更改SQL语句中生成的列名:

parentPosFlat.posParentCode AS department_flat_d,
employee.gsId as gs_id,
...
gsRoom.name AS room,
gsRoom.id AS room_id

或者，使用结构标签覆盖列名：

type UserListByDivisionMember struct {
    DepartmentFlatId string `gorm:"column:departmentFlatId"`
    GsId             string `gorm:"column:gsId"`
    ...
    Room             string `gorm:"column:room"`
    RoomId           string `gorm:"column:roomId"`
}

Gorm Scan 未绑定到结构

Gorm Scan not getting bound to struct

go

go-gorm