lijc210 edited a comment on issue #15892:
URL: https://github.com/apache/superset/issues/15892#issuecomment-886506222


   superset==1.2.0
   clickhouse-sqlalchemy  0.1.6
   
   clickhouse://ck_readonly:[email protected]:8123/ads?secure=true
   
   If the data from SQL query contains Null, an error will be reported
   
   clickhouse error: 'NoneType' object has no attribute 'startswith'
   
   In addition, the page does not display the correct field name, and the first 
row of data will be used as the field name
   
   
   
   


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