Question

Suppose I have database table TABLE1 and there is Column COLUMN1. The variable declaration for that column is set up as VARCHAR(20). Also, the column value can be NULL or EMPTY.

Suppose I have some ‘dates’ in that column (Format 12/01/2011) and I need a query to retrieve the dates, cannot be NULL or Empty and the dates are upto one year in the past (Suppose current date is 01/25/2012. I need the dates before 01/25/2011).

Please, help.

Answer 1

convert the varchar to a date and then work on it.

SELECT convert(date, column1) as date
from table1
where convert(date, column1) < '01/25/2011'
and date is not null and date <> ''