>I'm assuming you have rows in there "during the day" of Sept 17, maybe with times of 3 pm, ETC.
>
>the thing to remember is that when you use '20130917' on a datetime column, there's an implied midnight. So your original query will only capture those rows that occurred on 9/17 at midnight...not ones that happened throughout the day.
>
>You can try any of these...
>
>
>
select * from mytable where date_time >= '20130917' and date_time < '20130918'
>
>or
>
>
select * from mytable where cast(date_time as date) = '20130917'
>
>Though the first is likely to perform better than the 2nd....
Thank you for the explanation and for suggested solutions.
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