Can I Read Some Rows From The Middle Of Rows In DataReader?

Mar 30, 2007

helo..
I have 100,000 rows in the database and I want to read results for eg: from 5000 to 5050 by DataReader.
I wrote this code to do this but its too slow:



Dim SlctStr As String = "select * from topicstbl where partID like '" & PagePartID & "'"

Dim ReadCom As New SqlClient.SqlCommand

ReadCom.CommandText = SlctStr

ReadCom.Connection = MainLib.MyConnection

Dim MyReader As SqlClient.SqlDataReader = ReadCom.ExecuteReader()



Dim StartTNum As Long = 5000



For IR As Long = 0 To StartTNum - 1

MyReader.Read()

Next



Do While MyReader.Read

StartTNum += 1

If StartTNum > 5500 Then Exit Do



'''''''''''''''''''


Loop

MyReader.Close()



is there another way to do the same thing better off than this code?

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Hi I'm having a bit troubble by creating a SQL-sentence which substract the newest row from the second newest row in the same column. The table looks like this:

Pricecalcid Date Price Itemid
2000 2006-12-12 3000 100
2488 2007-10-11 2800 100
3100 2008-08-07 2500 100



What I need is that the largest "Pricecalcid" that is 3100 equals "Price" 2500 and the second largest "Pricecalcid" eqauls 2800 results in a pricecalculation that substracts 2500 from 2800 for "Itemid" 100.

How do I do that?

Thanks

Morten

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