Deduplicate Content by Field

Deduplicating content based on a specific field

Query

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groupBy(field, function=tail(1))

Introduction

If you want to deduplicate events by a given field, for example to identify a unique list of events for further processing, you can use an aggregate function. In this example, the groupBy() function is used with tail() to use the last value in a sequence of events.

Step-by-Step

  1. Starting with the source repository events.

  2. flowchart LR; %%{init: {"flowchart": {"defaultRenderer": "elk"}} }%% repo{{Events}} 0{{Aggregate}} result{{Result Set}} repo --> 0 0 --> result style 0 fill:#ff0000,stroke-width:4px,stroke:#000;
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    groupBy(field, function=tail(1))

    Groups all events in a specific field, and reduces the results using tail() to take only the last value.

  3. Event Result set.

Summary and Results

The query is used to deduplicate events by a given field. This is useful if you want to create a unique list of events for further processing.