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FILTER BY DATE FIELD sql 2005

Hello Guys,

I am having problem to filter through datetime field

I was doing this:

Select * from Table
where convert(char(10),datefield,112)='20090403'

But doing this I will have my index off

The dates that I have recorded is in this format:

2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00
2008-04-21 20:00:00

I have a time together

How can I filter the rows ?
I tried this but it didn't work

select * from table
where datefield='2009-04-21'

None rows

Thanks

Guy Hengel [angelIII / a3]

this should do:

Select * from Table
where datefield >= convert(datetime,'20090403', 112)
  and datefield < dateadd(day,1,convert(datetime,'20090403', 112))

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Raja Jegan R

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udaya kumar laligondla

use
select * from table
where datediff(dd,datefield,'2008-04-01') = 0

Raja Jegan R

udayakumarlm,
FYI, Even your query wont use the Index on the datefield column.

udaya kumar laligondla

small correction
select datefield from table
where datediff(dd,datefield,'2008-04-01') = 0 will use index
not
select * from table
where datediff(dd,datefield,'2008-04-01') = 0
hidrau, if it is performace that you are looking at then don't use *, if the fields you specify instead of * are all indexed then SQL will use index scan else it will use clustered index scan.

hidrau

ASKER

thanks