Aggregate function: returns the last value in a group.
last(x, ...)# S4 method for characterOrColumn
last(x, na.rm = FALSE)
column to compute on.
further arguments to be passed to or from other methods.
a logical value indicating whether NA values should be stripped before the computation proceeds.
The function by default returns the last values it sees. It will return the last non-missing value it sees when na.rm is set to true. If all values are missing, then NA is returned.
Other agg_funcs: agg, avg,
countDistinct, count,
first, kurtosis,
max, mean, min,
sd, skewness,
stddev_pop, stddev_samp,
sumDistinct, sum,
var_pop, var_samp,
var
# NOT RUN {
last(df$c)
last(df$c, TRUE)
# }
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