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chrisortman/migrate.exs

Created January 1, 2017 20:09
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How to bulk generate UUID values for a new column
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migrate.exs
for id <- Repo.all( from r in "recipients", select: r.id ),
{id, uid} = {id, Ecto.UUID.bingenerate},
do: from(r in "recipients", where: r.id == ^id, update: [set: [uid: ^uid]])
|> Repo.update_all([])
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