My app is in production and I want to manage user data when user updates the app without loss of their data, how can I achieve this with sqflite. Explicitly I want to add a column and delete another.
Flutter - How to update the table structure in Sqflite?
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2 Answers
You can probably add a column using raw sql, but sqlite (and thus sqflite) doesn't support dropping a column. For that you would need to do the following:
- increase the database version number
- in
onUpgradecopy the old database columns to a temporary table - delete the original table
- create a new table using the original table name but with the right schema
- copy the data from the temp table
- delete the temp table
Sorry, this isn't a full answer, but it is the direction I would go if I were in your situation.
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