Any indexes on the memory table?
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-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of John Bird
Sent: Thursday, 6 December 2007 9:16 p.m.
To: [EMAIL PROTECTED]; 'NZ Borland Developers Group - Delphi List'
Subject: RE: [DUG] Speed of loading a Client DataSet
I tried a different loop using code like
tbData.Fields[5].asString:=copy(Buffer,22,30); //name
tbData.Fields[6].asString:=copy(buffer,52,30); //desc
And found it was pretty much the same amount of time - that is
eliminating
the FieldByName seems to make no appreciable difference. In this case
66000
records take 36 seconds. The same procedures on a file with 15000
records
take around 6 seconds, so there is an effect of it slowing down the
larger
the datasets get.
John
Hi John
TDatset.FieldByName is slow - and you're repeating it 15,000X5 times.
Much better to declare 5 TField type vars, use TDataSet.FindField or
TDataSet.FieldByName to assign them prior to the loop.
See how you get on.
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