如何获取日期的ID

Question

表1

id dates

01 23/02/2011
02 24/04/2011
03 26/08/2011
...

我想从table1中选择id，如果超过6个月的日期。

tabl1的预期输出

id日期

01 23/02/2011 'Dates is older than 6 month
02 24/04/2011 'Dates is older than 6 month

如何进行查询

需要查询帮助

Answer 1

select id, dates
from Table1
where dates < dateadd(month, -6, getdate())

Answer 2

select id from table1 where datediff(m, dates, getdate()) >= 6