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# frozen_string_literal: true
class AddTmpIndexToSupportLeakyRegexCleanup < Gitlab::Database::Migration[1.0]
INDEX_NAME = "tmp_index_merge_requests_draft_and_status_leaky_regex"
LEAKY_REGEXP_STR = "^\\[draft\\]|\\(draft\\)|draft:|draft|\\[WIP\\]|WIP:|WIP"
CORRECTED_REGEXP_STR = "^(\\[draft\\]|\\(draft\\)|draft:|draft|\\[WIP\\]|WIP:|WIP)"
disable_ddl_transaction!
def up
add_concurrent_index :merge_requests, :id,
where: "draft = true AND state_id = 1 AND ((title)::text ~* '#{LEAKY_REGEXP_STR}'::text) AND ((title)::text !~* '#{CORRECTED_REGEXP_STR}'::text)",
name: INDEX_NAME
end
def down
remove_concurrent_index_by_name :merge_requests, INDEX_NAME
end
end
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