# NOT RUN {
library(dplyr)
dbplyr::memdb_frame(a = c(3, 4, 1, 2)) %>%
arrange(a)
# NA sorted first
dbplyr::memdb_frame(a = c(3, 4, NA, 2)) %>%
arrange(a)
# override by sorting on is.na() first
dbplyr::memdb_frame(a = c(3, 4, NA, 2)) %>%
arrange(is.na(a), a)
# }
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