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# frozen_string_literal: true
class CreateConfidentialNotesIndexOnId < Gitlab::Database::Migration[2.0]
OLD_INDEX_NAME = 'index_notes_on_confidential'
INDEX_NAME = 'index_notes_on_id_where_confidential'
disable_ddl_transaction!
def up
remove_concurrent_index_by_name :notes, name: OLD_INDEX_NAME
add_concurrent_index :notes, :id, where: 'confidential = true', name: INDEX_NAME
end
def down
# we don't have to re-create OLD_INDEX_NAME index
# because it wasn't used yet, also its creation might be expensive
remove_concurrent_index_by_name :notes, name: INDEX_NAME
end
end
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