Is there a more succinct way to get one column of a dplyr tbl as a vector, from a tbl with database back-end (i.e. the data frame/table can\'t be subset directly)?
You can also use unlist which I find easier to read because you do not need to repeat the name of the column or specify the index.
unlist
iris2 %>% select(Species) %>% unlist(use.names = FALSE)