Question

我想在准备好的声明中使用orderby子句。

以下是我的查询

$stmt = $connect->prepare("SELECT  send_stamp,id,receiverid, message, time, status,sentby FROM `chat` WHERE cust_id=?");
$stmt->bind_param('i', $cust_id);
$result=$stmt->execute();

现在，我在此查询中按（asc）添加顺序，按日期或ID对其进行排序。

请帮忙

Answer 1

你这样做：

$stmt = $connect->prepare("SELECT  send_stamp,id,receiverid, message, time, status,sentby FROM `chat` WHERE cust_id = ? ORDER BY id ASC");
$stmt->bind_param('i', $cust_id);
$result=$stmt->execute();

Answer 2

与普通SQL查询一样：在查询结束时：

$stmt = $connect->prepare(
    "SELECT
       send_stamp,id,receiverid, message, time, status, sentby
     FROM `chat`
     WHERE cust_id=?
     ORDER BY id DESC"
);
$stmt->bind_param('i', $cust_id);
$result=$stmt->execute();

Answer 3

您只需要在查询结束时添加，以下是我添加升序子句的示例。

    projects = self.leave_not_required_user.projects.filter(is_active=True)
    users = []
    for project in projects:
        project_memberships = project.projectmembership_set.filter(
            is_project_manager=True,
            user__is_active=True
        ).all()
        for project_membership in project_memberships:
            users.append(project_membership.user)

上面的查询将以$stmt = $connect->prepare( "SELECT send_stamp,id,receiverid, message, time, status, sentby FROM `chat` WHERE cust_id=? ORDER BY id ASC" ); $stmt->bind_param('i', $cust_id); $result=$stmt->execute();的升序返回记录，因为我们在id上使用了order子句。

Answer 4

通常在mysql的顺序中使用在语句的末尾。像

SELECT  send_stamp,id,receiverid, message, time, status,sentby FROM `chat` WHERE cust_id=? order by id

您可以按ID，名称或任何您想要的名称订购该字段的名称。

Answer 5

$stmt = $connect->prepare("SELECT  send_stamp,id,receiverid, message, time, status,sentby FROM `chat` WHERE cust_id=? ORDER  BY date ASC");

PHP：准备好的声明中的order by子句

5 个答案: