35 lines
838 B
Ruby
35 lines
838 B
Ruby
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
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# for more information on how to write migrations for GitLab.
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class ResetEventsPrimaryKeySequence < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
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# Set this constant to true if this migration requires downtime.
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DOWNTIME = false
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class Event < ActiveRecord::Base
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self.table_name = 'events'
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end
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def up
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if Gitlab::Database.postgresql?
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reset_primary_key_for_postgresql
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else
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reset_primary_key_for_mysql
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end
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end
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def down
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# No-op
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end
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def reset_primary_key_for_postgresql
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reset_pk_sequence!(Event.table_name)
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end
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def reset_primary_key_for_mysql
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amount = Event.pluck('COALESCE(MAX(id), 1)').first
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execute "ALTER TABLE #{Event.table_name} AUTO_INCREMENT = #{amount}"
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end
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end
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