带有IF FROM DISTINCT的COUNT值MySQL

Question

在对UserID进行DISTINCT后，我正在尝试计算有多少用户是女性以及有多少男性

SELECT
COUNT(IF("Gender" = 'female', 1, NULL)) as Ufemale,
COUNT(IF("Gender" = 'male', 1, NULL)) as Umale
FROM (SELECT DISTINCT UserID FROM user_stats where Year='2019' and Account='P') as UID

如果我执行

SELECT DISTINCT UserID FROM user_stats where Year='2019' and Account='P'

它返回唯一的UserID。但是，如果我将它与count性别部分组合，则返回Zero。

这是值的样子

UserID            |  Gender
-----------------------------
2018359084885123  |  male
1925823664195671  |  female
2033134076795519  |
2122445674469149  |  female
2315129265210413  |  female
2018359084885123  |  male
2122445674469149  |  female

目的是要表现出来

Ufemale  |  Umale
-------------------
   3     |    1