mysql - DATEDIFF() 函数

Question

我必须找出两个日期的差异(日期必须从字符串转换为日期格式)。我正在使用以下 mysql 查询

SELECT DATEDIFF
(
        (SELECT STR_TO_DATE(create_date, '%e %b %Y  %k:%i') AS create_date FROM booking) AS date1
        ,
        (SELECT STR_TO_DATE(start_date, '%e %b %Y  %k:%i') AS start_date FROM booking) AS date2
) diff 

内部查询单独工作成功。 日期格式已正确转换，例如从 5 Mar 1985 2:33 转换为 1985-03-05 02:33:00

Answer 1

是什么阻碍了你

SELECT
  DATEDIFF( 
    STR_TO_DATE(create_date, '%e %b %Y  %k:%i'),
    STR_TO_DATE(start_date, '%e %b %Y  %k:%i')
  ) AS diff
FROM booking