[英]mysql select each day record for the last 7 days
您如何选择最近7天的每日记录? 如果日期不可用,请将其设置为0。我尝试了以下操作,但未得到任何结果。
$stmt = $db->prepare("SELECT DATE(order_date),COUNT(id) as 'total' FROM `orders` WHERE `order_date` BETWEEN DATE_SUB(CURDATE(), INTERVAL 7 DAY) AND CURDATE()GROUP BY DATE(order_date)");
$stmt->execute();
$result = $stmt->get_result();
$total = [];
while($row = $result->fetch_object()){
$total[] = $row->total;
}
print_r($total);
不是我想要的实际解决方案,但我设法通过将查询包装在函数中并调用7次来获得结果。
function weeklyData($day){
$stmt = $db->prepare("SELECT order_date from orders where DATE(FROM_UNIXTIME(order_date)) = CURDATE() - INTERVAL ? DAY");
$stmt->bind_param('s', $day);
$stmt->execute();
$stmt->store_result();
return $stmt->num_rows;
}
$total = [];
for($x = 1; $x <= 7; $x++){
$total[] = weeklyData($x);
}
print_r($total);
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