如何确定MYSQL中年份和月份中两个日期之间的差异？

Question

The database holds records for people of all ages including children under the age of 1 where months are important.

Using

SELECT TIMESTAMPDIFF(YEAR, dob, CURDATE()) AS age; 

The problem you get is anyone < 1 year shows up as 0;

Using

SELECT TIMESTAMPDIFF(MONTH, dob, CURDATE()) AS age; 

Anyone over the age of 1 just shows up in months so a 43 year old will have an age of > 500 months

Using

SELECT TIMESTAMPDIFF(MONTH, dob, CURDATE()) / 12 AS age; 

You can get some results like .25 for a 3 month old or 43.25 for someone who is > 43

What I am trying to achieve is something like

• 43y 3m
• 0y 3m
• or even just 3m for those < 1 year

How can something like this be expressed in a mysql query?

Answer 1

 SELECT IF(TIMESTAMPDIFF(MONTH, dob, CURDATE())>12,TIMESTAMPDIFF(MONTH, dob, CURDATE())/12+ 'yeasrs old' , TIMESTAMPDIFF(MONTH, dob, CURDATE())+'months old')