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[SPARK-29164] Rewrite coalesce(boolean, booleanLit) as boolean expression - Spark - [issue]
...I propose the following expression rewrite optimizations:coalesce(x: Boolean, true)  -> x or isnull(x)coalesce(x: Boolean, false) -> x and isnotnull(x)This pattern appears when tr...
http://issues.apache.org/jira/browse/SPARK-29164    Author: Josh Rosen , 2019-12-12, 10:01