26 lines
814 B
Ruby
26 lines
814 B
Ruby
# frozen_string_literal: true
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class AddCiNamespaceMirrorsUnnestIndexOnTraversalIds < Gitlab::Database::Migration[1.0]
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disable_ddl_transaction!
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INDEX_NAME = 'index_ci_namespace_mirrors_on_traversal_ids_unnest'
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def up
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return if index_exists_by_name?(:ci_namespace_mirrors, INDEX_NAME)
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# We add only 4-levels since on average it is not expected that namespaces
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# will be so granular beyond this point
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disable_statement_timeout do
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execute <<-SQL
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CREATE INDEX CONCURRENTLY #{INDEX_NAME} ON ci_namespace_mirrors
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USING btree ((traversal_ids[1]), (traversal_ids[2]), (traversal_ids[3]), (traversal_ids[4]))
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INCLUDE (traversal_ids, namespace_id)
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SQL
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end
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end
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def down
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remove_concurrent_index_by_name(:ci_namespace_mirrors, INDEX_NAME)
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end
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end
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