计算最后10行中的匹配数量

Question

我需要帮助来实现在结果的最后10行中我有多少状态= 1？

如果在最后10行中有3个状态，我需要输出3个。

SELECT * FROM results WHERE $position='$text' and make='$make' and status='1'

Answer 1

您需要使用子查询来获取最后10行，然后计算该子集中有多少status = 1。

SELECT COUNT(*) AS count
FROM (SELECT status
      FROM results
      WHERE $position = '$text' AND make = '$make'
      ORDER BY id DESC
      LIMIT 10) AS last10
WHERE status = '1'

DEMO