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my $stmt = 'INSERT INTO contact_form (' . join(',', keys %sql) . ') VA
+LUES (' . join(',', ('?') x keys %sql) . ') ON DUPLICATE KEY UPDATE '
+. join(' = ?, ', keys %sql) . ' = ?';

$VAR1 = 'INSERT INTO contact_form (more_info,city,name,address,comment
+s) VALUES (?,?,?,?,?) ON DUPLICATE KEY UPDATE more_info = ?, city = ?
+, name = ?, address = ?, comments = ?';

...for the right syntax to use near ' city = , name = , address = , co
+mments ='

ON DUPLICATE KEY UPDATE '
+. join(' = ?, ', keys %sql) . ' = ?'