Question

I have a table contains various columns including two DateTime column, Start and End.

How can I write a linq query over entity framework to find Duration.

I’m looking for a result like this: 2y 3m 2d 6h 4m 58s.

There’s also three important limitations:

1. I can’t add function or sp to db
2. I can’t add new calculated column to table
3. I can’t do this operation in memory using loops like foreach considering memory usage according to the huge number of records.

Any idea?

Answer 1

In your Linq-to-entities query, you can use EntityFunctions and the the DiffSeconds method to find the difference between two DateTime’s