15 lines
594 B
Ruby
15 lines
594 B
Ruby
class AddIndicesToLearningOutcomeGroups < ActiveRecord::Migration
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tag :predeploy
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disable_ddl_transaction!
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def self.up
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add_index :learning_outcome_groups, [:context_id, :context_type], :algorithm => :concurrently, :where => { :learning_outcome_group_id => nil }
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add_index :learning_outcome_groups, :learning_outcome_group_id, :algorithm => :concurrently, :where => "learning_outcome_group_id IS NOT NULL"
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end
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def self.down
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remove_index :learning_outcome_groups, [:context_id, :context_type]
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remove_index :learning_outcome_groups, :learning_outcome_group_id
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end
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end
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