Reynold Xin created SPARK-8205:
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Summary: conditional function: nvl
Key: SPARK-8205
URL: https://issues.apache.org/jira/browse/SPARK-8205
Project: Spark
Issue Type: Sub-task
Reporter: Reynold Xin
nvl(T value, T default_value): T
Returns default value if value is null else returns value (as of HIve 0.11).
We already have this (called Coalesce). Just need to register an alias for it
in FunctionRegistry.
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