Hello, As I mentioned at the title, stddev_samp function gives a NaN while stddev_pop gives a numeric value on the same data. The stddev_samp function will give a numeric value, if I cast it to decimal. E.g. cast(stddev_samp(column_name) as decimal(16,3)) Is it a bug?
Thanks - mungeol --------------------------------------------------------------------- To unsubscribe e-mail: user-unsubscr...@spark.apache.org
