Hi I have a question, and tryed to find the response without success.

When someone use DBI ODBC
if you do a select
$request = "select var1,var2,var3 from table";
$Dbh->prepare("$request");
$Sth->execute();
$var1,$var2,$var3) = $Sth1->fetchrow();

what exactly happen, I mean internaly?

Do the $Sth->execute() read the entire table and put it into an array in memory?

Do the $Sth->fetchrow() read one row from the array in memory?

OR it return some pointer than the fetchrow read one record from that table on disk at the time?

In reply to Fetchrow question by alainb

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