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# frozen_string_literal: true
module Gitlab
module BackgroundMigration
# Sets the `has_merge_request` of the existing `vulnerability_reads` records
class BackfillHasMergeRequestOfVulnerabilityReads < BatchedMigrationJob
operation_name :set_has_merge_request
feature_category :database
UPDATE_SQL = <<~SQL
UPDATE
vulnerability_reads
SET
has_merge_request = true
FROM
(%<subquery>s) as sub_query
WHERE
vulnerability_reads.vulnerability_id = sub_query.vulnerability_id
SQL
def perform
each_sub_batch do |sub_batch|
update_query = update_query_for(sub_batch)
connection.execute(update_query)
end
end
private
def update_query_for(sub_batch)
subquery = sub_batch.joins("
INNER JOIN vulnerability_merge_request_links ON
vulnerability_reads.vulnerability_id =
vulnerability_merge_request_links.vulnerability_id")
format(UPDATE_SQL, subquery: subquery.to_sql)
end
end
end
end
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