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Why does my yesterday query return no results?


Why does my yesterday query return no results?

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jerome.morris
jerome.morris
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Hi all I have a datetime column in my DB and I am trying to fetch all records from yesterday using

SELECT *from SLADB.dbo.DocketTB
WHERE Docket_Date = (GETDATE() - 1)


but is always returns no results and I no the data is there

2012-09-22 21:33:39.390

is this because of the time ?


Thanks
jerome.morris
jerome.morris
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where Docket_Date = DATEADD(d,DATEDIFF(d,0,GETDATE()),0)-1
ChrisM@Work
ChrisM@Work
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Try casting both sides of the comparison as date:

WHERE CAST(Docket_Date AS DATE) = CAST(GETDATE() AS DATE) - 1

“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden
Exploring Recursive CTEs by Example Dwain Camps
jerome.morris
jerome.morris
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Operand type clash: date is incompatible with int


Is it the time thats causing the problem ?
jerome.morris
jerome.morris
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SELECT *from SLADB.dbo.DocketTB


where Docket_EngFinish >=dateadd(d,datediff(d,0, getdate()),-1) AND Docket_EngFinish<dateadd(d,datediff(d,0, getdate()),0)


This works, is there a better way ?

Thanks again Chris :-)
ChrisM@Work
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jerome.morris (10/23/2012)
SELECT *from SLADB.dbo.DocketTB


where Docket_EngFinish >=dateadd(d,datediff(d,0, getdate()),-1) AND Docket_EngFinish<dateadd(d,datediff(d,0, getdate()),0)


This works, is there a better way ?

Thanks again Chris :-)


Yes - cast both sides as DATE

where CAST(Docket_EngFinish AS DATE) = CAST(GETDATE() AS DATE) - 1

Does Docket_EngFinish have a time component or is it all 0's?

“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden
Exploring Recursive CTEs by Example Dwain Camps
jerome.morris
jerome.morris
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It has a time stamp also and the cast gave me the error

Operand type clash: date is incompatible with int
ChrisM@Work
ChrisM@Work
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Oops...

CAST(GETDATE() -1 AS DATE)

“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden
Exploring Recursive CTEs by Example Dwain Camps
kupy
kupy
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Hi

Did you try DATEDIFF(day, Docket_EngFinish , getdate())=1 ?
The datediff by day checks only the day part and not the time.
http://msdn.microsoft.com/en-us/library/ms189794.aspx
Jeff Moden
Jeff Moden
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ChrisM@Work (10/23/2012)
Yes - cast both sides as DATE


I don't believe so, Chris... no chance of getting an index seek that way.

--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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