Stream Analytics Job query is invalid.

[MatthijsvdVeer]

This issue is for a: (mark with an x)

- [ ] bug report -> please search issues before submitting
- [ ] feature request
- [X] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

The query on https://github.com/Azure-Samples/azureiotlabs/blob/master/CosmosDB/README.md#stream-data-to-cosmos-db isn't valid anymore for the current version it seems.

Any log messages given by the failure

Column '*' cannot be used in SELECT clause when GROUP BY clause is present. Only aggregating expressions and the expressions specified in the GROUP BY clause are allowed.

Expected/desired behavior

The query can be saved.

OS and Version?

Windows 7, 8 or 10.

Versions

Google Chrome Version 71.0.3578.98 (Official Build) (64-bit)

Mention any other details that might be useful

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