與去年/蒙特/周/天比較

Question

我有一個當前設置，其中我將數據庫中的所有projets與我的查詢匯總，如下所示：

$query01 = "
  SELECT COUNT(project_id) as total_week
  FROM projects
  WHERE WEEK(CURDATE(), 1) between WEEK(project_start, 1) and WEEK(project_delivery, 1)
";

以及每年/每月/每天的平等查詢。

我還想輸出一個箭頭向上/向下與去年/月/周/日的比較。

我怎樣才能實現這樣的目標？ 提前致謝！

Answer 1

$thisweek = query("SELECT COUNT(project_id) as total_week
    FROM projects
    WHERE WEEK(CURDATE(), 1) between WEEK(project_start, 1) and WEEK(project_delivery, 1)");

$lastweek = query("SELECT COUNT(project_id) as total_last_week
    FROM projects
    WHERE WEEK(DATE_SUB(CURDATE(), INTERVAL 1 WEEK), 1) between WEEK(project_start, 1) and WEEK(project_delivery, 1)");

$comparison = $thisweek - $lastweek;

像這樣的事情應該做，在這種情況下，我使用的“查詢”功能假定僅提取單個計數。