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# frozen_string_literal: true
class CreateMergeRequestUserMentions < ActiveRecord::Migration[5.2]
DOWNTIME = false
def change
create_table :merge_request_user_mentions do |t|
t.references :merge_request, type: :integer, index: false, null: false, foreign_key: { on_delete: :cascade }
t.references :note, type: :integer,
index: { where: 'note_id IS NOT NULL', unique: true }, null: true, foreign_key: { on_delete: :cascade }
t.integer :mentioned_users_ids, array: true
t.integer :mentioned_projects_ids, array: true
t.integer :mentioned_groups_ids, array: true
end
add_index :merge_request_user_mentions, [:merge_request_id], where: 'note_id is null', unique: true, name: 'merge_request_user_mentions_on_mr_id_index'
add_index :merge_request_user_mentions, [:merge_request_id, :note_id], unique: true, name: 'merge_request_user_mentions_on_mr_id_and_note_id_index'
end
end
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