20 lines
478 B
Ruby
20 lines
478 B
Ruby
# frozen_string_literal: true
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class DeleteDuplicatedHolidays < ActiveRecord::Migration[7.0]
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def up
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execute <<~SQL
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DELETE
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FROM calendar_events ce
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WHERE
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ce.id IN (SELECT ce2.id FROM calendar_events ce2
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INNER JOIN users ON users.id = ce2.user_id
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WHERE ce2.post_id IS NULL
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AND ce2.username != users.username)
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SQL
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end
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def down
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raise ActiveRecord::IrreversibleMigration
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end
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end
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