从php中检索超过60天但不到90天的mysql记录

Question

我正在尝试在Mysql中查找超过60天但不到90天的记录。 超过60天的工作，但我似乎只能获得不超过89天的记录。

SELECT * FROM signings WHERE datediff(now(), signstart) > 60 < 90

Answer 1

尝试

SELECT * FROM signings WHERE datediff(now(), signstart) > 60 and datediff(now(), signstart) < 90

Answer 2

SELECT * FROM signings WHERE signstart BETWEEN 
      DATE_SUB(NOW(), INTERVAL 90 day) AND DATE_SUB(NOW(), INTERVAL 30 day)