apt-key output should not be parsed (stdout is not a terminal)

Factors converted to character

call dbDisconnect() when finished working with a connection

Do not rely on the default value of the row.names argument for sqlAppendTable(), it will change in the future.

Do not rely on the default value of the row.names argument for sqlAppendTable(), it will change in the future.

Do not rely on the default value of the `row.names` argument to `sqlAppendTableTemplate()`, it will change in the future.

Do not rely on the default value of the `row.names` argument to `sqlAppendTableTemplate()`, it will change in the future.

Do not rely on the default value of the row.names argument for sqlCreateTable(), it will change in the future.

Do not rely on the default value of the row.names argument for sqlCreateTable(), it will change in the future.