Delete rows with date older than 30 days with SQL Server query

Solution 1:

Use DATEADD in your WHERE clause:

...
WHERE date < DATEADD(day, -30, GETDATE())

You can also use abbreviation d or dd instead of day.

Solution 2:

You could also use

SELECT * from Results WHERE date < NOW() - INTERVAL 30 DAY;

Solution 3:

Although the DATEADD is probably the most transparrent way of doing this, it is worth noting that simply getdate()-30 will also suffice.

Also, are you looking for 30 days from now, i.e. including hours, minutes, seconds, etc? Or 30 days from midnight today (e.g. 12/06/2010 00:00:00.000). In which case, you might consider:

SELECT * 
FROM Results 
WHERE convert(varchar(8), [Date], 112) >= convert(varchar(8), getdate(), 112)

Solution 4:

To delete records from a table that have a datetime value in Date_column older than 30 days use this query:

USE Database_name;
DELETE FROM Table_name
WHERE Date_column < GETDATE() - 30

...or this:

USE Database_name;
DELETE FROM Table_name
WHERE Date_column < DATEADD(dd,-30,GETDATE())

To delete records from a table that have a datetime value in Date_column older than 12 hours:

USE Database_name;
DELETE FROM Table_name
WHERE Date_column < DATEADD(hh,-12,GETDATE())

To delete records from a table that have a datetime value in Date_column older than 15 minutes:

USE Database_name;
DELETE FROM Table_name
WHERE Date_column < DATEADD(mi,-15,GETDATE())

From: http://zarez.net/?p=542