20 lines
754 B
Ruby
20 lines
754 B
Ruby
class AddIndexFeaturedTagsOnAccountIdAndTagId < ActiveRecord::Migration[6.1]
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disable_ddl_transaction!
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def up
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duplicates = FeaturedTag.connection.select_all('SELECT string_agg(id::text, \',\') AS ids FROM featured_tags GROUP BY account_id, tag_id HAVING count(*) > 1').to_ary
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duplicates.each do |row|
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FeaturedTag.where(id: row['ids'].split(',')[0...-1]).destroy_all
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end
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add_index :featured_tags, [:account_id, :tag_id], unique: true, algorithm: :concurrently
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remove_index :featured_tags, [:account_id], algorithm: :concurrently
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end
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def down
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add_index :featured_tags, [:account_id], algorithm: :concurrently
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remove_index :featured_tags, [:account_id, :tag_id], unique: true, algorithm: :concurrently
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end
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end
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