blob: 1d96872d44540eccda2209061d37c7647f903622 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
# frozen_string_literal: true
module Gitlab
module BackgroundMigration
SUB_BATCH_SIZE = 1_000
# The class to populates the total projects counter cache of topics
class PopulateTopicsTotalProjectsCountCache
# Temporary AR model for topics
class Topic < ActiveRecord::Base
include EachBatch
self.table_name = 'topics'
end
def perform(start_id, stop_id)
Topic.where(id: start_id..stop_id).each_batch(of: SUB_BATCH_SIZE) do |batch|
ActiveRecord::Base.connection.execute(<<~SQL)
WITH batched_relation AS #{Gitlab::Database::AsWithMaterialized.materialized_if_supported} (#{batch.select(:id).limit(SUB_BATCH_SIZE).to_sql})
UPDATE topics
SET total_projects_count = (SELECT COUNT(*) FROM project_topics WHERE topic_id = batched_relation.id)
FROM batched_relation
WHERE topics.id = batched_relation.id
SQL
end
end
end
end
end
|
