CASE BETWEEN聲明

Question

我在我的數據庫中有一個簡單的日誌表。對於每個頁面訪問，插入一行。現在我想爲今天和昨天總結一個專欄。

我嘗試以下查詢：

SELECT Sum(CASE 
      WHEN `time` > 1364767200 THEN `sqlquerycount` 
      end) AS `today`, 
     Sum(CASE 
      WHEN `time` BETWEEN 1364684400 AND 1364767200 THEN `sqlquerycount` 
      end) AS `yesterday` 
FROM `log` 

導致以下PHP腳本：

$sql = "SELECT 
     SUM(CASE WHEN `time` > ".strtotime("today")." THEN `sqlQueryCount` END) AS `today`, 
     SUM(CASE WHEN `time` BETWEEN ".strtotime("yesterday")." AND ".strtotime("today")." THEN `sqlQueryCount` END) AS `yesterday` 
    FROM `log`"; 

「昨天」的剩餘空，但我沒有看到與此查詢任何問題。任何想法？

Answer 1

我敢打賭爲

$sql = "SELECT 
     SUM(CASE WHEN `time` > ".strtotime("today")." THEN `sqlQueryCount` ELSE 0 END) AS `today`, 
     SUM(CASE WHEN `time` BETWEEN ".strtotime("yesterday")." AND ".strtotime("today")." THEN `sqlQueryCount` ELSE 0 END) AS `yesterday` 
    FROM `log`"; 

...提供sqlQueryCount是你想做的總和列！