I friend of mine did a program as below and complains
scan is too low.
He as 3,000,000 records
He wonder if the struct is correct or is there a better way
to do that.
Tables are into a database

sele tabela A
set order to indice
sele tabela B
go top
scan
sele tabela A
seek(tabela B.campo)
if found()
replace value from tabelaB to tabelaA
sele tabela B
endif
endscan