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![Jean-Philippe Lang](/assets/img/avatar_default.png)
git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11295 e93f8b46-1217-0410-a6f0-8f06a7374b81
16 line
512 B
Ruby
16 line
512 B
Ruby
class AddUniqueIndexOnTokensValue < ActiveRecord::Migration
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def up
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say_with_time "Adding unique index on tokens, this may take some time..." do
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# Just in case
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duplicates = Token.connection.select_values("SELECT value FROM #{Token.table_name} GROUP BY value HAVING COUNT(id) > 1")
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Token.where(:value => duplicates).delete_all
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add_index :tokens, :value, :unique => true, :name => 'tokens_value'
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end
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end
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def down
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remove_index :tokens, :name => 'tokens_value'
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end
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end
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