akkoma/priv/repo/migrations/20180221210540_make_following_postgres_array.exs

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defmodule Pleroma.Repo.Migrations.MakeFollowingPostgresArray do
use Ecto.Migration
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def up do
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alter table(:users) do
add :following_temp, {:array, :string}
end
execute """
update users set following_temp = array(select jsonb_array_elements_text(following));
"""
alter table(:users) do
remove :following
end
rename table(:users), :following_temp, to: :following
end
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def down, do: :ok
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end