Oracle datetime基于格式进行比较

Question

In the Oracle, how to do this date compare if column type is datetime ? I want to keep the string format 'MM/dd/yyyy' .

how to do this ?

Thanks

select * from my_tbl
where mycol >= '07/11/2012'

Answer 1

Assuming that date means July 11th:

select * 
from my_tbl
where mycol >= to_date('07/11/2012', 'MM/DD/YYYY');

If that date should be November 7th:

select * 
from my_tbl
where mycol >= to_date('07/11/2012', 'DD/MM/YYYY');

Depending on how you fill in the values for mycol, you might want to get rid of the time part as well:

select * 
from my_tbl
where trunc(mycol) >= to_date('07/11/2012', 'DD/MM/YYYY');