ayushbilala commented on issue #8808: superset db upgrade returns foreign key constraint is incorrectly formed URL: https://github.com/apache/incubator-superset/issues/8808#issuecomment-585388902 I am facing the same issue. Looks like different charsets of the two tables is the cause. 'query' table was created with **CHARSET=utf8**. On adding **DEFAULT CHARSET=utf8** with **CREATE TABLE tab_state**, it works fine.
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