SQL

date less than current date sql

SELECT * FROM table_name WHERE date_field >= NOW();

query less than datetime sql

select *  
from dbo.March2010 A 
where A.Date >= '2010-04-01'

date less than in sql

SELECT * FROM wp_osd_properties WHERE `listing_expiration` < '2020-08-05'

t sql less than date

SELECT *
FROM Users
WHERE member_since < '2011-12-25'

sql constraint to check date less than current date

ALTER TABLE yourTable
	ADD CONSTRAINT yourDateTimeColumn CHECK (yourDateTimeColumn < GetDate() );