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Searching between 2 DateTime Values using SELECT stmt in Vb.Net

  #1  
Old February 24th, 2009, 03:37 PM
Member
  
Join Date: Apr 2007
Posts: 99
I’m using VB.net 2003 application program.

I am trying to do a select statement whereby I'm searching between 2 datetime values that are being stored as datetime. records are stored inside Access.

For example, I’m searching between 2 datetime
Quote:
StartTime = “2/23/2009 10:00:00 AM”
EndTime = “2/23/2009 12:30:00 AM”
So I need to find all the records in between 10:00 AM and 12:30 AM on 2/23/2009.


i tried this code
Expand|Select|Wrap|Line Numbers
  1. strSQL = "select OrderID from Orders Where OrderDate >= ('" & StartTime & "') AND OrderDate <= ('" & EndTime & "') "
  2.  
but i got the error showing below
Quote:
An unhandled exception of type 'System.Data.OleDb.OleDBException' occured in system.data.dll

Then i tried this code
Expand|Select|Wrap|Line Numbers
  1. strSQL = "select OrderID from Orders Where OrderDate >= DATEVALUE('" & StartTime & "') AND OrderDate <= DATEVALUE('" & EndTime & "') "
  2.  
But when I use DATEVALUE, it takes the date from the string and set time as midnight (00:00:00). So it returns no records between 10:00 AM and 12:30 AM on 2/23/2009, but I can see there are records.


Then i tried this code
Expand|Select|Wrap|Line Numbers
  1. strSQL = "select OrderID from Orders Where OrderDate >= TimeValue('" & StartTime & "') AND OrderDate <= TimeValue('" & EndTime & "') "
  2.  
And when I use TimeValue, it returns the time from the string and set date as jan 1st. so it returns no records between 10:00 AM and 12:30 AM on 2/23/2009, but I can see there are records.

Then i tried this code
Expand|Select|Wrap|Line Numbers
  1. strSQL = "select OrderID from Orders Where (OrderDate BETWEEN DATEVALUE('" & StartTime & "') AND DATEVALUE('" & EndTime & "')) "
  2.  
Expand|Select|Wrap|Line Numbers
  1. strSQL = "select OrderID from Orders Where (OrderDate BETWEEN ('" & StartTime & "') AND ('" & EndTime & "')) "
  2.  
but none of the codes above is returning records between 10:00 AM and 12:30 AM on 2/23/2009, but I can see there are records.

i searched and found all those examples. but that didn't work. Is there anyway i can search between 2 datetime values. i need to find all the records that lies between that time period (for example: between 10:00 AM and 12:30 AM on 2/23/2009).

If you have any idea how to do this, please let me know. if you can provide an example, then that will be great help for me.

Thanks in advance.



  #2  
Old February 24th, 2009, 07:53 PM
Member
  
Join Date: Apr 2007
Posts: 99

re: Searching between 2 DateTime Values using SELECT stmt in Vb.Net

when i tried these codes and it start working...
Expand|Select|Wrap|Line Numbers
  1.  strSQL = "select OrderDate from Orders Where OrderDate between (datevalue('" & StartTime & "') + timevalue('" & StartTime & "')) and (datevalue('" & EndTime & "') + timevalue('" & EndTime & "')) "
  2.  
Expand|Select|Wrap|Line Numbers
  1. strSQL = "select OrderDate from Orders Where OrderDate >= (datevalue('" & StartTime & "') + timevalue('" & StartTime & "')) and OrderDate <= (datevalue('" & EndTime & "') + timevalue('" & EndTime & "')) "
  2.  
But when i try
Expand|Select|Wrap|Line Numbers
  1.  strSQL = "select COUNT(*) from Orders Where OrderDate between (datevalue('" & StartTime & "') + timevalue('" & StartTime & "')) and (datevalue('" & EndTime & "') + timevalue('" & EndTime & "')) "
  2.  
  3. OR
  4.  
  5.  strSQL = "select SUM(gTotal) from Orders Where OrderDate between (datevalue('" & StartTime & "') + timevalue('" & StartTime & "')) and (datevalue('" & EndTime & "') + timevalue('" & EndTime & "')) "
  6.  
  7.  
Expand|Select|Wrap|Line Numbers
  1. strSQL = "select COUNT(*) from Orders Where OrderDate >= (datevalue('" & StartTime & "') + timevalue('" & StartTime & "')) and OrderDate <= (datevalue('" & EndTime & "') + timevalue('" & EndTime & "')) "
  2.  
  3. OR
  4.  
  5. strSQL = "select SUM(gTotal) from Orders Where OrderDate >= (datevalue('" & StartTime & "') + timevalue('" & StartTime & "')) and OrderDate <= (datevalue('" & EndTime & "') + timevalue('" & EndTime & "')) "
  6.  
Then its showing the below error
Quote:
An unhandled exception of type 'System.Data.OleDb.OleDBException' occured in system.data.dll
but when i try this
Expand|Select|Wrap|Line Numbers
  1.  strSQL = "select COUNT(*) from Orders "
  2.  
Expand|Select|Wrap|Line Numbers
  1. strSQL = "select SUM(gTotal) from Orders "
  2.  
Then its returns the values.

Is it possible to use COUNT(*) or SUM(gTotal) while i'm checking DateTime Value? If you have any idea please help me.

Thanks in advance.
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Searching between 2 DateTime Values using SELECT stmt in Vb.Net remya1000 answers 5 February 25th, 2009 05:05 PM

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