sql語句查詢某一天數據

--如果還有今天以后的數據

--一周內呢
SELECT * FROM TB WHERE datediff(dd,DATE_TIME,getdate()) between 0 and 7

--從現在起往前算24小時內的呢？
SELECT * FROM TB WHERE datediff(hh,DATE_TIME,getdate()) between 0 and 23