You can't execute a second query while still fetching the results of an earlier query. (At least, this was the case a year ago when I last tried that). You might want to use $dbh->selectall_arrayref or $dbh->selectall_hashref to fetch the data of your first query.
Also, You are passing a parameter ($region_id) to the second query when executing it, but no placeholders are defined in the second query ($sql_statement).

In reply to Re: Lost connection to MySQL server by Neighbour
in thread Lost connection to MySQL server by spstansbury

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