0fc9f9d3e7
DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912
17 lines
355 B
Ruby
17 lines
355 B
Ruby
# rubocop:disable all
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class FixTodos < ActiveRecord::Migration[4.2]
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def up
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execute <<-SQL
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DELETE FROM todos
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WHERE todos.target_type IN ('Commit', 'ProjectSnippet')
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OR NOT EXISTS (
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SELECT *
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FROM projects
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WHERE projects.id = todos.project_id
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)
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SQL
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end
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def down
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end
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end
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