Mysql 大查询日期 table

Question

我的查询是运行大约 10 秒，那是 unacceptable。

我正在寻找提高此速度的方法，但我别无选择。我必须在 table 超过 1200 万行中找到从现在到 30 天前的记录。

以下查询：

SELECT DATE(DATE) AS FDATE,
       SUM(VIEW_COUNT) AS COUNT,
       COUNT(IP_ADDRESS) AS CLIENTS
FROM VIEWS
WHERE USERID = 'test'
  AND DATE BETWEEN ADDDATE(CURDATE(), INTERVAL -30 DAY) AND CURDATE()
GROUP BY FDATE DESC

我也试过了，效果一样：

SELECT DATE(DATE) AS FDATE,
       SUM(VIEW_COUNT) AS COUNT,
       COUNT(IP_ADDRESS) AS CLIENTS
FROM VIEWS
WHERE USERID = 'test'
  AND DATE >= (DATE(NOW() - INTERVAL 30 DAY) + INTERVAL 0 SECOND)
GROUP BY FDATE DESC

Answer 1

您可以尝试使用 MySQL 索引以在减少查询执行时间方面获得更好的性能。

http://dev.mysql.com/doc/refman/5.7/en/mysql-indexes.html

Mysql 大查询日期 table

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