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-rw-r--r--test/visitors/test_to_sql.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/visitors/test_to_sql.rb b/test/visitors/test_to_sql.rb
index e31d60366b..07458c1dc5 100644
--- a/test/visitors/test_to_sql.rb
+++ b/test/visitors/test_to_sql.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
require 'helper'
require 'set'