One field of data returned from a database is the string value "IO" (there are ~10 other two-character codes). I am able to print out all other codes with:
print "$db[0]\n";

[download]
However, using Perl (5.6.1 build 633 with DBI 1.37 to query Oracle) I am unable to show or use any records that have "IO".
I do not specify "use IO;" in the program, but is it possible that perl thinks that I am trying to use the IO modules?
sample database rows:
"abc123","AB" (this works just fine)
"def234","IO" (perl pretends that this record does not exist)
"ghi345","BC" (this works just fine)

What I'm trying to do:
$sql = "select * from mytable";<BR>
while (@data = $sth->fetchrow()) {<BR>
    mkdir($data[1]) if (! -d $data[1]);<BR>
}

[download]

The result is two directories (from sample data) named "AB" and "BC". There are no error messages.

In reply to Strange Missing Data by mukrz

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