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31 lines
716 B
Elixir
31 lines
716 B
Elixir
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defmodule AshHq.Repo.Migrations.AddLibraryOrder do
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@moduledoc """
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Updates resources based on their most recent snapshots.
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This file was autogenerated with `mix ash_postgres.generate_migrations`
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"""
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use Ecto.Migration
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def up do
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alter table(:libraries) do
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add :order, :bigint, null: true
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end
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execute("""
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WITH sorted AS (SELECT id, ROW_NUMBER() OVER(ORDER BY name ASC) AS new_order FROM libraries)
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UPDATE libraries SET "order" = (SELECT new_order FROM sorted WHERE sorted.id = libraries.id) - 1;
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""")
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alter table(:libraries) do
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modify :order, :bigint, null: false
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end
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end
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def down do
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alter table(:libraries) do
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remove :order
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end
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end
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end
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