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Q: Searching and removing

P: n/a
Hi guys

I'd be grateful if you could help me with the following question:

I have a DataSet in which I'm using a SQL search string to find rows which
satisfy a criteria. I'd then like to perform another search, using a
different search criteria, and I know that the rows selected first won't
satisfy the second criteria. What is the most efficient way of doing the
second search? That is, using the "Select" member of the table in the
dataset, won't all the rows be checked again. My idea is to somehow "remove"
the rows from the first search because I know they won't be applicable. As
there would be fewer rows to check, the second search may be quicker (for
the same type of search)

However, the problem is that during each search, the rows found have a value
written to a field which I want to update to the database source at the end
of the calculations. If I'm "deleting" the rows after each search i.e. to
improve the speed of subsequent searches, then I've lost the rows to update.
Hence, the problem! However, I'm sure there must be some way round it.

If my ramblings make sense, I'd be most grateful for any feedback;
especially some example code.

Many thanks in advance

Nov 20 '05 #1
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