oleg-zinovev commented on issue #1450: DRILL-6717: lower and upper functions not works with national characters URL: https://github.com/apache/drill/pull/1450#issuecomment-418801482 @arina-ielchiieva , @Ben-Zvi Shortly: String.toUpperCase faster on non-ascii strings and slower on ascii-only strings. I will provide my JMH code + new PR with "merged" idea tomorrow.
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