如何在一个查询中组合两个选择查询

Question

SELECT users.firstname from users
INNER JOIN user_ps
ON user_ps.user_id=users.id where user_id=23 group BY user_ps.user_id

SELECT SUM(best + better + good) from user_ps as total where user_id=23

嗨，我是新用户，我需要在这里提供帮助，如何将两者合并到一个查询中，请帮帮我

Answer 1

您可以使用工会结合

SELECT users.firstname from users
INNER JOIN user_ps
ON user_ps.user_id=users.id where user_id=23 group BY user_ps.user_id
UNION
SELECT SUM(best + better + good) from user_ps as total where user_id=23

Answer 2

尝试这个：-

SELECT users.firstname, SUM(best + better + good) AS Total
FROM users INNER JOIN user_ps
ON user_ps.user_id=users.id 
WHERE user_id=23 
GROUP BY users.firstname;