OK, got it. It's because the DB return contains NULL values so the code is basically trying to do a join on an empty string!

I have added the below just before the join and it has fixed it.

foreach (%$ref) {$_ = '' unless defined};

[download]

Thanks all

In reply to Re^4: Perl script to check database works or does it? by chris01010
in thread Perl script to check database works or does it? by chris01010

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