f13afa1ee9
Fix #8275 As the batch operation progresses, the statuses_stats table grows, and the WHERE NOT IN subquery becomes more expensive
23 lines
703 B
Ruby
23 lines
703 B
Ruby
class CopyStatusStats < ActiveRecord::Migration[5.2]
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disable_ddl_transaction!
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def up
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safety_assured do
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Status.unscoped.select('id').find_in_batches(batch_size: 5_000) do |statuses|
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execute <<-SQL.squish
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INSERT INTO status_stats (status_id, reblogs_count, favourites_count, created_at, updated_at)
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SELECT id, reblogs_count, favourites_count, created_at, updated_at
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FROM statuses
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WHERE id IN (#{statuses.map(&:id).join(', ')})
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ON CONFLICT (status_id) DO UPDATE
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SET reblogs_count = EXCLUDED.reblogs_count, favourites_count = EXCLUDED.favourites_count
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SQL
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end
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end
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end
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def down
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# Nothing
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end
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end
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