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class AddIndexOnNamespacesLowerName < ActiveRecord::Migration
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
INDEX_NAME = 'index_on_namespaces_lower_name'
disable_ddl_transaction!
def up
return unless Gitlab::Database.postgresql?
disable_statement_timeout
if Gitlab::Database.version.to_f >= 9.5
# Allow us to hot-patch the index manually ahead of the migration
execute "CREATE INDEX CONCURRENTLY IF NOT EXISTS #{INDEX_NAME} ON namespaces (lower(name));"
else
execute "CREATE INDEX CONCURRENTLY #{INDEX_NAME} ON namespaces (lower(name));"
end
end
def down
return unless Gitlab::Database.postgresql?
disable_statement_timeout
if Gitlab::Database.version.to_f >= 9.2
execute "DROP INDEX CONCURRENTLY IF EXISTS #{INDEX_NAME};"
else
execute "DROP INDEX IF EXISTS #{INDEX_NAME};"
end
end
end
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