[GitHub] [incubator-superset] javyxu opened issue #5978: Cratedb failed to add table in superset

[GitHub]

Hi， This is an error caused by cratedb being used in superset. Please advise!

- [x] I have checked the superset logs for python stacktraces and included it 
here as text if any
- [ ] I have reproduced the issue with at least the latest released version of 
superset
- [ ] I have checked the issue tracker for the same issue and I haven't found 
one similar

### Expected results

![image](https://user-images.githubusercontent.com/22185273/46070806-3e190780-c1b1-11e8-91ca-e557f207148c.png)

### Actual results

![image](https://user-images.githubusercontent.com/22185273/46070677-f6927b80-c1b0-11e8-94df-23bcff8278c7.png)





[ Full content available at: 
https://github.com/apache/incubator-superset/issues/5978 ]
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