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Comparing Values in a Table Against Current Time

Comparing Values in a Table Against Current Time

Question:
I’m having a problem writing a SELECT statement that will compares a date stored in a table against the current time.

This is for a calendar on a Web site that gets its information from a database of events. The events pulled out of the database should be within 30 days of the present date, and not before the present date (as already happened!).

How would you go about doing this?

Answer:
The current time is retrievable by the getdate() function, so what you need is the difference between today (getdate()) and a date in your table. (I used sales from publications for this illustration, so you can get the idea from there.)

Try to execute this and see if it doesn’t get you home:

 select ord_num from sales where datediff(dd, ord_date, getdate()) <30

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