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Local Tutorial Reference data
Kwangje Cho редактировал(а) эту страницу 2019-10-04 12:03:17 -07:00
The Reference tab is where you can add static data to join with your streaming data.
In this tutorial, you'll learn to:
- Add Reference data
- Use the Editor features to join to your Reference Data
Adding Reference Data
- Open your Flow and go to the Reference tab
- Add a new CSV/TSV file
- Given a csv file that looks as such located in /app/myRefData.csv in the container. (See FAQ how to upload a file to your docker.)
You can use the following example:
temperature tempDescription
32 freezing
70 balmy
98 body
212 boiling
- Set up your CSV by setting up:
- Alias: this will be how to use the reference data in your query, for example: myRefData
- Path: where to load the reference data from, for example '/app/myRefData.csv';
- Delimiter: data can be comma or tab limited
- Header: if your data has a header row
- Open the Query tab of your flow
- You can now join your streaming data to the reference data by doing a JOIN:
JOIN myRefData ON myRefData.temperature;
- Add an output statement to the code:
OUTPUT extendedTemperature TO myOutput;
- Click Deploy
Your data now has reference data joined to it. You can view the results by looking at the local file output as described in this tutorial.