Details
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Bug
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Status: Resolved
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Major
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Resolution: Incomplete
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2.3.1
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None
Description
How to reproduce:
spark-sql> SELECT upper('Haßler'); HASSLER
Mainstream databases returns HAßLER.
This behavior may lead to data inconsistency:
create temporary view SPARK_25230 as select * from values ("Hassler"), ("Haßler") as EMPLOYEE(name); select UPPER(name) from SPARK_25230 group by 1; -- result HASSLER