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Datetime Checks


Datetime Checks

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ishaan99
ishaan99
Ten Centuries
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Group: General Forum Members
Points: 1276 Visits: 295
I have a table with a column as dateentered with datatype varchar(10). I want to check this column with getdate(). Now since getdate() return date with time. and if i do cast(dateenetered as datetime) - this return only date with tiem as 00:00:00. How is it possibel to check only the date part ex if dateentered values are

2009-01-07 00:00:00.000
2009-01-07 00:00:00.000
and if select getdate() returns 2009-01-08 14:42:15.613
i need to check only 2009-01-07 with 2009-01-08 ignoring the time. ANy help on this will be greatly appreciated. TIA



RBarryYoung
RBarryYoung
SSC-Dedicated
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Group: General Forum Members
Points: 34840 Visits: 9518
There are several ways to strip the time out, here is one:

select cast(floor(cast(getdate() as Float)) as datetime)



-- RBarryYoung, (302)375-0451 blog: MovingSQL.com, Twitter: @RBarryYoung
Proactive Performance Solutions, Inc.
"Performance is our middle name."
Mike - CI
Mike - CI
SSC Eights!
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Points: 890 Visits: 1155
RBarryYoung (1/8/2009)
There are several ways to strip the time out, here is one:

select cast(floor(cast(getdate() as Float)) as datetime)



I had always used
select cast(convert(char(10), getdate(), 101) as datetime)

but this way is more slick.
RBarryYoung
RBarryYoung
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Group: General Forum Members
Points: 34840 Visits: 9518
The "DATEDIFF" method is supposed to be the fastest, but I can never remember it off the top of my head.

-- RBarryYoung, (302)375-0451 blog: MovingSQL.com, Twitter: @RBarryYoung
Proactive Performance Solutions, Inc.
"Performance is our middle name."
RBarryYoung
RBarryYoung
SSC-Dedicated
SSC-Dedicated (34K reputation)SSC-Dedicated (34K reputation)SSC-Dedicated (34K reputation)SSC-Dedicated (34K reputation)SSC-Dedicated (34K reputation)SSC-Dedicated (34K reputation)SSC-Dedicated (34K reputation)SSC-Dedicated (34K reputation)

Group: General Forum Members
Points: 34840 Visits: 9518
Figured it out:

Select DATEADD(dd,DATEDIFF(dd,0, getdate()), 0)



-- RBarryYoung, (302)375-0451 blog: MovingSQL.com, Twitter: @RBarryYoung
Proactive Performance Solutions, Inc.
"Performance is our middle name."
Jeff Moden
Jeff Moden
SSC Guru
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Group: General Forum Members
Points: 214168 Visits: 41979
If the following formula results in zero, the data was entered today, regardless of time...

SELECT DATEDIFF(dd,datecolumn,GETDATE())

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

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