Time difference b/w insert_recordset and update_recordset

Prerequisite to run this Job is to create a new table of the name TestTable having a field CustName which extends from CustName EDT.

Here i am trying to find what time is takes to insert and update records using insert_recordset and update_recordset.When the Table's Temporaryproperty is YES and No.

With Temporary property set to No.update takes half of the time it takes to insert.

With Temporary property set to Yes.update and insert operations take zero time.




TestTable test;
CustTable Cust;
int time1;
int time2;
;

time1 = WinAPI::getTickCount();
insert_recordset test(CustName)
select Name from Cust;
time2=WinAPI::getTickCount();
info(strfmt('Insert Time %1 %2',time2,time1));
time1 = WinAPI::getTickCount();
//UPDATE INSERT TAKES HALF OF THE TIME WHAT IS TAKES FOR INSERT.
update_recordset test
setting CustName='Huzaifa';
time2=WinAPI::getTickCount();
info(strfmt('Update Time %1 %2',time2,time1));
while select * from test
{
info(test.CustName);

}