Hi monks, i have a question concerning binary identifiers coming from sql server. I'm using DBI to retrieve rows that contain a binary data type, and then i use unpack. 
# ... DBI stuff ... grab row with binary datatype
$parent_hex = '0x0' . unpack("H*",$row->{parentid});

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I want to determine whether $parent_hex is zero but for some reason the below comparison doesn't work 
if ( !$parent_hex ) {
     #do something
}
else {
     #do something different
}

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how can I successfully compare $parent_hex to 0x000000000? thanks, Michael

In reply to binary ids by Anonymous Monk

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