Código SQL [-] INSERT INTO bd2.tabla(clave, noclave1, noclave2) SELECT clave, noclave1, noclave2 FROM bd1.tabla T ON DUPLICATE KEY UPDATE noclave1 = T.noclave1, noclave2 = T.noclave2;
INSERT INTO bd2.tabla(clave, noclave1, noclave2) SELECT clave, noclave1, noclave2 FROM bd1.tabla T ON DUPLICATE KEY UPDATE noclave1 = T.noclave1, noclave2 = T.noclave2;