discourse/db/migrate/20201027110546_create_linke...

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# frozen_string_literal: true
class CreateLinkedTopics < ActiveRecord::Migration[6.0]
def change
create_table :linked_topics do |t|
t.bigint :topic_id, null: false
t.bigint :original_topic_id, null: false
t.integer :sequence, null: false
t.timestamps
end
add_index :linked_topics, [:topic_id, :original_topic_id], unique: true
add_index :linked_topics, [:topic_id, :sequence], unique: true
end
end