44 lines
1.2 KiB
Ruby
44 lines
1.2 KiB
Ruby
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# frozen_string_literal: true
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class AddMissingExpressionIndexes < ActiveRecord::Migration[6.0]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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disable_ddl_transaction!
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INDEXES = [
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[:namespaces, :index_on_namespaces_lower_name, 'LOWER(name)'],
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[:namespaces, :index_on_namespaces_lower_path, 'LOWER(path)'],
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[:projects, :index_on_projects_lower_path, 'LOWER(path)'],
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[:routes, :index_on_routes_lower_path, 'LOWER(path)'],
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[:users, :index_on_users_lower_username, 'LOWER(username)'],
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[:users, :index_on_users_lower_email, 'LOWER(email)']
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]
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def up
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# Those indexes had been introduced before, but they haven't been
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# captured in structure.sql. For installations that already have it,
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# this is a no-op - others will get it retroactively with
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# this migration.
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tables = Set.new
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INDEXES.each do |(table, name, expression)|
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unless index_name_exists?(table, name)
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add_concurrent_index table, expression, name: name
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tables.add(table)
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end
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end
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# Rebuild statistics on affected tables only
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tables.each do |table|
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execute("ANALYZE #{table}")
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end
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end
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def down
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# no-op
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end
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end
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