Hi Dilushan,

you're touching a tough topic here: migrations in distributed database
systems. We have written an article about it, which might be helpful:


Am Do., 15. Aug. 2019 um 12:35 Uhr schrieb Dilushan Delgoda <

> When we want to add new column in RDBMS we can add column with a default
> value that will fill up all past records with specified default value. In
> our case we want add a new attribute to a Couchdb document. After that code
> expect that attribute to be there even in past records. How we going to
> implement that sql like behavior in Couchdb.
> --
> Regards,
> Dilushan Delgoda

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