Both do() and execute() should return undef in the case of an error.

The thing to realize is that an UPDATE or DELETE that affects 0 rows is not an error, as far as both DBI and MySQL are concerned. This is why you get the 0E0 return value instead of 0: the operation succeeded, but didn't affect any rows.

Having said all that, you should still be using placeholders for UPDATE/DELETE/INSERT statements. You can do that with do() if you want.

Michael

In reply to Re: Return values from $dbh->do vs. $sth->execute(); by mpeppler
in thread Return values from $dbh->do vs. $sth->execute(); by injunjoel

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