php - 如何根据值将mysql中的行计入两个或多个变量？

Question

我想根据一个查询中的条件，将升级或标准用户计入 users['upgraded'] 或 users['standard'] 变量。我正在使用 mysql 和 PDO。 “id”是主键

像这样:

$user[upgraded] =

SELECT COUNT(*)
FROM users
AS upgraded
WHERE (status1 > 0 OR status2 > 0 OR status3 > 0)
AND upgraded = 1
AND paused = 0
AND timestamp < $timestamp
ORDER BY id DESC

和

$user[standard] =

SELECT COUNT(*)
FROM users
AS standard
WHERE (status1 > 0 OR status2 > 0 OR status3 > 0)
AND upgraded = 0
AND paused = 0
AND timestamp < $timestamp
ORDER BY id DESC

我如何在一个查询中得到这个？帮助将不胜感激!

Answer 1

MySQL bool 运算，我相信这是最短的可能答案

SELECT  SUM(upgraded = 1) upgraded,
        SUM(upgraded = 0) downgraded
FROM    users
WHERE   (status1 > 0 OR status2 > 0 OR status3 > 0) AND 
        paused = 0  AND 
        timestamp < $timestamp

但是如果你想要更友好的 RDBMS，请使用 CASE

SELECT  SUM(CASE WHEN upgraded = 1 THEN 1 ELSE 0 END) upgraded,
        SUM(CASE WHEN upgraded = 0 THEN 1 ELSE 0 END) downgraded
FROM    users
WHERE   (status1 > 0 OR status2 > 0 OR status3 > 0) AND 
        paused = 0  AND 
        timestamp < $timestamp