Question

“I need to create a field that will show the number of days between a date and the present.

TABLE:  reg_add

+------------+---------+
| Name       | Type    |
+------------+---------+ 
| hm_date    | date    |
+------------+---------+ 
| total_days | date    |
+------------+---------+ 

My client will type in the following date for example in “hm_date”: May 1, 2012.

I need “total_days” to show the total days between May 1, 2012 at the current date.

I want to achieve this on server-side, which is somewhat new to me.

I need to create a TRIGGER to always have “total_days” updated

I started with this and I’m having trouble making a trigger and getting it correct:

SELECT DATEDIFF(curdate(),hm_date) as total_days FROM reg_add

Any help would be appreciated.

Erik

Answer 1

Erik, I am using tsql, and not as familiar with mySQL, but in tsql the DATEDIFF function requires 3 parameters. The sytax is

DATEDIFF(date part, date1, date2).

I would try DATEDIFF(d,GETDATE(),hm_date) AS total_days FROM reg_add