nwang57 commented on issue #3538: Apply time filtering to "time grain" truncated dates URL: https://github.com/apache/incubator-superset/issues/3538#issuecomment-353697451 I also found an issue with `literal_column` from SQLAlchemy that will escape the "%" symbol in the string. The final SQL will have two consecutive "%". <img width="879" alt="screen shot 2017-12-22 at 8 00 51 pm" src="https://user-images.githubusercontent.com/7065997/34315783-0e75e68a-e753-11e7-91cf-4bfcc12dc07d.png";> This issue is related to #617 . I tried to switch to the SQLAlchemy 1.2.0b3 and it works fine. So they already fix this issue in the latest version.
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