[GitHub] [drill] oleg-zinovev commented on pull request #1450: DRILL-6717: lower and upper functions not works with national characters

[GitHub]

@Ben-Zvi 
I don't know reason (maybe performance or allocation of big strings ?), but In 
test classes you can find simple implemenations:
org.apache.drill.udf.dynamic.LowerFunction 
/ org.apache.drill.udf.dynamic.CustomUpperFunction 



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