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# frozen_string_literal: true
class AddJoinTableForSelfManagedPrometheusAlertIssues < ActiveRecord::Migration[5.2]
# Set this constant to true if this migration requires downtime.
DOWNTIME = false
def change
# Join table to Issues
create_table :issues_self_managed_prometheus_alert_events, id: false do |t|
t.references :issue, null: false,
index: false, # Uses the index below
foreign_key: { on_delete: :cascade }
t.references :self_managed_prometheus_alert_event, null: false,
index: { name: 'issue_id_issues_self_managed_rometheus_alert_events_index' },
foreign_key: { on_delete: :cascade }
t.timestamps_with_timezone
t.index [:issue_id, :self_managed_prometheus_alert_event_id],
unique: true, name: 'issue_id_self_managed_prometheus_alert_event_id_index'
end
end
end
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