22 lines
606 B
Ruby
22 lines
606 B
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 MergeRequestDiffRemoveUniq < ActiveRecord::Migration
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include Gitlab::Database::MigrationHelpers
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disable_ddl_transaction!
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DOWNTIME = false
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def up
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if index_exists?(:merge_request_diffs, :merge_request_id)
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remove_index :merge_request_diffs, :merge_request_id
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end
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end
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def down
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unless index_exists?(:merge_request_diffs, :merge_request_id)
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add_concurrent_index :merge_request_diffs, :merge_request_id, unique: true
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end
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end
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end
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