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Fix `AddUniqueIndexOnPreviewCardsStatuses` migration requiring PostgreSQL 12+ in some cases (#26737)

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Claire 2023-08-31 15:47:30 +02:00 committed by GitHub
parent 6b58cfd8dd
commit 1471be8225
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1 changed files with 13 additions and 1 deletions
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db/post_migrate/20230803082451_add_unique_index_on_preview_cards_statuses.rb
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@ -15,10 +15,22 @@ class AddUniqueIndexOnPreviewCardsStatuses < ActiveRecord::Migration[6.1]
private
def supports_concurrent_reindex?
@supports_concurrent_reindex ||= begin
version = select_one("SELECT current_setting('server_version_num') AS v")['v'].to_i
version >= 12_000
end
end
def deduplicate_and_reindex!
deduplicate_preview_cards!
safety_assured { execute 'REINDEX INDEX CONCURRENTLY preview_cards_statuses_pkey' }
if supports_concurrent_reindex?
safety_assured { execute 'REINDEX INDEX CONCURRENTLY preview_cards_statuses_pkey' }
else
remove_index :preview_cards_statuses, name: :preview_cards_statuses_pkey
add_index :preview_cards_statuses, [:status_id, :preview_card_id], name: :preview_cards_statuses_pkey, algorithm: :concurrently, unique: true
end
rescue ActiveRecord::RecordNotUnique
retry
end