SQL條件取決於相同查詢中的結果

Question

我有這個mySQL語句：

SELECT (SELECT COUNT(id) from online_users WHERE name='lol') as online, id, name, city
FROM players 
WHERE name='lol'
AND last_action < date_sub(now(), interval 1 hour)

但是我希望last_action間隔有所變化； 如果online為1，則為1分鍾；如果online為0，則為1小時

可以在一個查詢中全部完成嗎？ 怎么會這樣？

Answer 1

SELECT (SELECT COUNT(id) from online_users WHERE name='lol') as online, id, name, city
FROM players 
WHERE name='lol'
AND last_action < date_sub(now(), interval 1 CASE WHEN online=0 THEN hour ELSE MINUTE END)

嘗試上面的代碼。

希望這會有所幫助。

Answer 2

您可以使用OR條件，如下所示：

SELECT (SELECT COUNT(id) from online_users WHERE name='lol') as online, id, name, city
FROM players 
WHERE name='lol'
AND ((last_action < date_sub(now(), interval 1 hour) AND online = 1) OR (last_action < date_sub(now(), interval 1 minute) AND online = 0))