作为单个mysql查询执行两个不同的查询

Question

$query1 = "SELECT 
    SUM(dischargecount) AS dis, MONTHNAME(dischargedate) AS n
FROM
    user
WHERE
    DATE(dischargedate) BETWEEN '$from' AND '$to'
GROUP BY MONTH(dischargedate)";


$query2 = "SELECT 
    COUNT(DISTINCT response_user) AS val1,
    MONTHNAME(response_on) AS m
FROM
    response
WHERE
    response_on BETWEEN '$from' AND '$to'
GROUP BY MONTH(response_on)";

我想将两个查询作为一个执行。

Answer 1

从$ query1 $ q1，$ query2 $ q2中选择col_name $ q1，col_name $ q2，其中condition1和condition2;

Answer 2

SELECT 
    SUM(dischargecount) AS dis, MONTHNAME(dischargedate) AS n
FROM
    user
WHERE
    DATE(dischargedate) BETWEEN '$from' AND '$to'
GROUP BY MONTH(dischargedate)
UNION ALL
SELECT 
    COUNT(DISTINCT response_user) AS val1,
    MONTHNAME(response_on) AS m
FROM
    response
WHERE
    response_on BETWEEN '$from' AND '$to'
GROUP BY MONTH(response_on)