Re: Fastest way to delete records.

[Jim Langston <jimlangston@xxxxxxxxxxxxxxxx>]

Don't make them unique keys.  You are allowed duplicate keys, as long as
you don't specify UNIQUE.

Regards,

Jim Langston

Quazy wrote:
> 
> sounds good, but I can't create a logical on timestamp alone.  As then I
> would have many duplicate keys. as there are 40,000 employee numbers each
> with many timestamps.
> 
> At 01:49 PM 2/7/01 -0800, you wrote:
> >Hmm...
> >create a logical on the time stamp.
> >
> >Open Combined Full procedural this file
> >Do while not LR
> >   if  TimeStamp <= ToTimeStamp
> >   Delete  Record
> >   else
> >   SetOn LR
> >   EndIf
> >End Do
> >
> >Can anyone think of a faster way?
> >
> >Regards,
> >
> >Jim Langston
> >
> >
> >Quazy wrote:
> > >
> > > I have a file with about 10 million records.  It is keyed on  Company #,
> > > Employee #, and Time stamp.
> > >
> > > I need to delete all records that have a time stamp before a certain time
> > > period.
> > >
> > > Any suggestions on the fastest approach?
> > > Speed is a very important factor.
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