2018-12-05 23:21:45 +05:30
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# frozen_string_literal: true
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module Gitlab
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module Database
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module Subquery
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class << self
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def self_join(relation)
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t = relation.arel_table
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2019-02-13 22:33:31 +05:30
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# Work around a bug in Rails 5, where LIMIT causes trouble
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# See https://gitlab.com/gitlab-org/gitlab-ce/issues/51729
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r = relation.limit(nil).arel
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r.take(relation.limit_value) if relation.limit_value
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t2 = r.as('t2')
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2018-12-05 23:21:45 +05:30
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relation.unscoped.joins(t.join(t2).on(t[:id].eq(t2[:id])).join_sources.first)
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end
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end
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end
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end
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end
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