Sum
Pydoc |
Sums all the elements within each aggregation.
Examples
In the following example, we create a pipeline with a PCollection.
Then, we get the sum of all the element values in different ways.
Example 1: Sum of the elements in a PCollection
We use Combine.Globally() to get sum of all the element values from the entire PCollection.
Example 2: Sum of the elements for each key
We use Combine.PerKey() to get the sum of all the element values for each unique key in a PCollection of key-values.
Related transforms
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Pydoc |
Last updated on 2025/10/23
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