Merge branch 'dev_aliyun' of https://bdgit.educoder.net/Hjqreturn/educoder into dev_aliyun
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f10400ceda
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class AddIndexForShixunServices < ActiveRecord::Migration[5.2]
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def change
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sql = %Q(delete from shixun_service_configs where (shixun_id, mirror_repository_id) in
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(select * from (select shixun_id, mirror_repository_id from shixun_service_configs group by shixun_id, mirror_repository_id having count(*) > 1) a)
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and id not in (select * from (select min(id) from shixun_service_configs group by shixun_id, mirror_repository_id having count(*) > 1 order by id) b))
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ActiveRecord::Base.connection.execute sql
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add_index :shixun_service_configs, [:shixun_id, :mirror_repository_id], unique: true, name: "shixun_id_mirror_id_unique"
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end
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end
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