SQL

coursera spark sql max count

df.groupBy(color).max("count").show();

+-----------+----------+
|color      |max(count)|
+-----------+----------+
|        red|         5|
|       blue|         3|
|      brown|         2|
|      green|         2|
+-----------+----------+

coursera spark sql max count

+-----------+----------+----------+
|color      |      date|max(count)|
+-----------+----------+----------+
|        red|2014-05-26|         5|
|       blue|2014-05-26|         3|
|      brown|2014-07-31|         2|
|      green|2014-08-01|         2|
+-----------+----------+----------+