This is an SQL question - but anyway. The subselect should be in parenthesis like this: 
destination =
        (SELECT destination
        FROM checkin
        ...
        )/

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I don't know why there is that qq/ perhaps it was pasted from some kind of reference but it should not be there.

Beside that I'm not sure if in the current MySQL there are subselect supported.

In reply to Re: error calling MySQL from Perl by zby
in thread error calling MySQL from Perl by mooseboy

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