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  2. MIDRANGE-L
  3. March 2002

Re: SQL Existence Check

Vernon wrote:

> CHAIN is basically SETLL and READ, so the difference is the
> time to read the record. Mileage will vary, based on record
> length and datatypes. What were your fields in the file in
> question?

Not quite. SETLL will always set the current record pointer. CHAIN will set
it only when a record is found. If Nathan were to re-run his test where the
record is never found I think he would find that the CHAINs are quicker
than the SETLLs.

Dave...
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