Senhores, boa noite!

Encontrei um exemplo que talvez possa ajudar:

http://r.789695.n4.nabble.com/Question-RMySQL-bulk-load-update-one-column-dbWriteTable-td826895.html

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Éder Comunello
PhD Student in Agricultural Systems Engineering (USP/Esalq)
Brazilian Agricultural Research Corporation (Embrapa)
Dourados, MS, Brazil [22 16.5'S, 54 49.0'W]