Posted On: Feb 22, 2018
In this case, only one column is used as a primary key. This column is also referred to as partitioning key which is used to partition the data. By virtue of the partition key, data has been spread on various nodes.
In this, the data is partitioned and then grouped. race_name is referred to as partitioning key while the race_position is referred to as clustering key. Former decides the partition of data and the latter decides the clustering of data.
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