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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
# frozen_string_literal: true
class ReplaceUniqueIndexOnCycleAnalyticsStages < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
OLD_INDEX_NAME = 'index_analytics_ca_group_stages_on_group_id_and_name'
NEW_INDEX_NAME = 'index_group_stages_on_group_id_group_value_stream_id_and_name'
disable_ddl_transaction!
def up
add_concurrent_index(:analytics_cycle_analytics_group_stages,
[:group_id, :group_value_stream_id, :name],
unique: true,
name: NEW_INDEX_NAME)
remove_concurrent_index_by_name :analytics_cycle_analytics_group_stages, OLD_INDEX_NAME
end
def down
# Removing duplicated records (group_id, name) that would prevent re-creating the old index.
execute <<-SQL
DELETE FROM analytics_cycle_analytics_group_stages
USING (
SELECT group_id, name, MIN(id) as min_id
FROM analytics_cycle_analytics_group_stages
GROUP BY group_id, name
HAVING COUNT(id) > 1
) as analytics_cycle_analytics_group_stages_name_duplicates
WHERE analytics_cycle_analytics_group_stages_name_duplicates.group_id = analytics_cycle_analytics_group_stages.group_id
AND analytics_cycle_analytics_group_stages_name_duplicates.name = analytics_cycle_analytics_group_stages.name
AND analytics_cycle_analytics_group_stages_name_duplicates.min_id <> analytics_cycle_analytics_group_stages.id
SQL
add_concurrent_index(:analytics_cycle_analytics_group_stages,
[:group_id, :name],
unique: true,
name: OLD_INDEX_NAME)
remove_concurrent_index_by_name :analytics_cycle_analytics_group_stages, NEW_INDEX_NAME
end
end
|
