Re: Possibilities for batch insert

"klaasvanschelven" <[email protected]>
Newsgroups gmane.comp.lang.delphi.programming
Message-ID <[email protected]>
Hi,

A followup on my last post, on improving the speed of large batches 
of inserts into a DB.

1. Append vs. Insert doesn't change a thing
2. There are no data-aware controls linked to my table
3. The kind of DB is Acces via ODBC
4. No indices, etc.
5. Removing some of the larger fields doesn't produce significant 
gains


I've found the following factor 2 improvement:

var
  GroupsCache: TClientDataSet;
  GroupsProvider: TProvider;
begin
  GroupsProvider := TProvider.Create(Application);
  GroupsProvider.DataSet := GroupsTable;
  GroupsProvider.Name := 'aaaaaaa1';
  GroupsCache := TClientDataSet.Create(Application);
  GroupsCache.ProviderName := GroupsProvider.Name;
  GroupsCache.Active := True;
  GroupsCache.LogChanges := False;

// loop over the GroupsCache using something like this:
  Groups.Append;
  GroupsCache['id'] := fID;
  GroupsCache['name'] := fName;
  GroupsCache['index'] := etc.

  GroupsCache.ApplyUpdates(-1);
  GroupsCache.Free;
  GroupsProvider.Free;
end;


Unfortunatly this still isn't good enough. Has anybody got ideas on 
improving this?

Thanx,
Klaas





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