30 lines
1.1 KiB
Ruby
30 lines
1.1 KiB
Ruby
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
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# for more information on how to write migrations for GitLab.
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class AddPartialIndexesOnTodos < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
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# Set this constant to true if this migration requires downtime.
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DOWNTIME = false
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disable_ddl_transaction!
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INDEX_NAME_PENDING = "index_todos_on_user_id_and_id_pending"
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INDEX_NAME_DONE = "index_todos_on_user_id_and_id_done"
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def up
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unless index_exists?(:todos, [:user_id, :id], name: INDEX_NAME_PENDING)
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add_concurrent_index(:todos, [:user_id, :id], where: "state='pending'", name: INDEX_NAME_PENDING)
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end
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unless index_exists?(:todos, [:user_id, :id], name: INDEX_NAME_DONE)
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add_concurrent_index(:todos, [:user_id, :id], where: "state='done'", name: INDEX_NAME_DONE)
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end
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end
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def down
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remove_concurrent_index(:todos, [:user_id, :id], where: "state='pending'", name: INDEX_NAME_PENDING)
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remove_concurrent_index(:todos, [:user_id, :id], where: "state='done'", name: INDEX_NAME_DONE)
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end
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end
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