CASE BETWEEN声明

Question

我在我的数据库中有一个简单的日志表。对于每个页面访问，插入一行。现在我想为今天和昨天总结一个专栏。

我尝试以下查询：

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` 

导致以下PHP脚本：

$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”的剩余空，但我没有看到与此查询任何问题。任何想法？

Answer 1

我敢打赌为

$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是你想做的总和列！