Create migrate script failed

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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

0.15.4

Expected results

the upgrade function in migrations/versions/xx.py should create the tables in models.py

Actual results

the upgrade function in migrations/versions/xx.py' is going to drop tables ab_xxx` in mysql

Steps to reproduce

There are too many files in migrations/versions/, so i want to re-generate the migrate py.

1. rm -r migrations/
2. superset db init
   this step generates folder migrations/ and others, and serveal tables ab_xxx in mysql
3. superset db migrate -m "initial migration" this step generates a py in migrations/versions/, but its upgrade function is drop these tables ab_, not creating tables in models.py

what’s wrong with my operations?

[gbrian]

Hi, Having the issue:

sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) near "ALTER": syntax error
[SQL: ALTER TABLE annotation ALTER COLUMN layer_id SET NOT NULL]

It happens without any change. layer_id column at annotation table is defined:

layer_id = Column(Integer, ForeignKey('annotation_layer.id'), nullable=False)

Question: Is it save to commit the generated script? If not what’s the preferred DB engine for development? Currently using sqlite3

[mistercrunch]

Notice: this issue has been closed because it has been inactive for 401 days. Feel free to comment and request for this issue to be reopened.