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kotlinlang

Yes, we can do something like this
```
ALTER TABLE table_name ADD newcolumn_name type NOT NULL DEFAULT (0)
Go
Update table_name SET newcolumn_name = oldcolumn_name Where newcolumn_name = 0
```

Ok ! In any case I think alter statements are out of scope for Exposed. So you would have to do it manually

I'm also not sure that DEFAULT(0) is `default values from another column`.
It's just "placeholder" value for further manual update.

What you want may be handled with triggers, I guess.

DEFAULT(0) it’s just for set NOT NULL type for new column.

Ok, will try, thank you.