UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-3: ordinal not in range(128)

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[-] 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

Superset version

0.18.2

Expected results

Graphic a column diagram product sales group by date.

Actual results

Throws an exception: UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-3: ordinal not in range(128) Detail Stack Info:

2017-05-17 17:27:56,137:INFO:root:SELECT `TIMESTAMP` AS `TIMESTAMP`, product AS product, COUNT(*) AS count 
FROM ja_act_lotterylog 
WHERE `TIMESTAMP` >= STR_TO_DATE('2016-11-20 17:27:56', '%%Y-%%m-%%d %%H:%%i:%%s') AND `TIMESTAMP` <= STR_TO_DATE('2016-11-30 17:27:56', '%%Y-%%m-%%d %%H:%%i:%%s') GROUP BY `TIMESTAMP`, product ORDER BY count DESC 
 LIMIT 50000
2017-05-17 17:28:05,548:ERROR:root:'ascii' codec can't encode characters in position 0-3: ordinal not in range(128)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/superset/viz.py", line 237, in get_payload
    data = self.get_data(df)
  File "/usr/lib/python2.7/site-packages/superset/viz.py", line 1113, in get_data
    x = str(x)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-3: ordinal not in range(128)
2017-05-17 17:28:05,551:INFO:root:Caching for the next 600000 seconds

Steps to reproduce

Add a MySQL datasource and table, then click Sources --> Tables --> Query, after that show result like below:

MySQL table data:

Remember that some meta data use in Chinese.

[mistercrunch]

Also if you’re not using py3 it may help

[elkan1788]

@RichardKyire I don’t known the deep reason. May you can check the DB environment suggest to use the “UTF-8” charset.