DateDiff is extremely fast... Your problem is you are running it on the database table column value, so the query processor must run the function on every row in the table, even if there was an index on …

Jan 22, 2010 · Is there any way to take the difference between two datetime in sql server? For example, my dates are 2010-01-22 15:29:55.090 2010-01-22 15:30:09.153 So, the result should be 14.063 …

Oct 15, 2009 · I have a table listing people along with their date of birth (currently a nvarchar(25)) How can I convert that to a date, and then calculate their age in years? My data looks as follows ID Na...

Feb 9, 2015 · I need to use Oracle but DATEDIFF function doesn't work in Oracle DB. How to write the following code in Oracle? I saw some examples using INTERVAL or TRUNC. SELECT DATEDIFF …

Mar 7, 2016 · The datepart passed to DATEDIFF will control the resolution of the output. example, if start_date and end_date differed by 59 seconds, then DATEDIFF (MINUTE, start_date, end_date) / …

Oct 9, 2009 · How can I use DATEDIFF to return the difference between two dates in years, months and days in SQL Server 2005 DATEDIFF (date , date) How to result that: 2 year 3 month 10 day Can …

Here I need to calculate the difference of the two dates in the PostgreSQL. Like we do in SQL Server its much easier. DATEDIFF(Day, MIN(joindate), MAX(joindate)) AS DateDifference; I am trying usi...

The DateDiff function returns how many seconds, months, years - whatever interval you specify between the first date (here 0) and the second date (here the current date).

Why use datediff instead of just comparing the two dates? Doesn't that just require extra processing time?

All datediff() does is compute the number of period boundaries crossed between two dates. For instance datediff(yy,'31 Dec 2013','1 Jan 2014') returns 1. You'll get a more accurate result if you compute the …