Add index to improve query performance
For Environment.deployed_to_cluster
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---
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title: Add index to improve group cluster deployments query performance
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merge_request: 31988
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author:
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type: other
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# frozen_string_literal: true
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class AddClusterStatusIndexToDeployments < ActiveRecord::Migration[5.2]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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disable_ddl_transaction!
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def up
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add_concurrent_index :deployments, [:cluster_id, :status]
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end
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def down
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remove_concurrent_index :deployments, [:cluster_id, :status]
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end
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end
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@ -1146,6 +1146,7 @@ ActiveRecord::Schema.define(version: 2019_08_28_083843) do
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t.integer "status", limit: 2, null: false
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t.datetime_with_timezone "finished_at"
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t.integer "cluster_id"
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t.index ["cluster_id", "status"], name: "index_deployments_on_cluster_id_and_status"
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t.index ["cluster_id"], name: "index_deployments_on_cluster_id"
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t.index ["created_at"], name: "index_deployments_on_created_at"
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t.index ["deployable_type", "deployable_id"], name: "index_deployments_on_deployable_type_and_deployable_id"
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