On Tuesday, February 7, 2012 2:36:14 AM UTC-5, LightOfMooN wrote: > > I'm using loop for 100000 inserts just one time to insert 100k records > in database. > All next time I just try to get response. > And now in our project we have much more than 100k records, that can > be filtered and sorted by some dinamic conditions. >
In order to convert query results into a DAL Rows object, the DAL has to loop through all the records and convert each one to a Row object (doing some transformations, depending on the field types). This takes a long time for tens of thousands of records. The code could probably be made a bit more efficient, but some initial attempts resulted in only small improvements. I'm not sure it can get dramatically faster. If you really need to work with that many records at a time, you're probably better off using executesql and working with the raw results rather than converting to a DAL Rows object. Anthony
