Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/10435#discussion_r48527967
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala
---
@@ -176,3 +179,223 @@ case class Crc32(child: Expression) extends
UnaryExpression with ImplicitCastInp
})
}
}
+
+/**
+ * A function that calculates hash value for a group of expressions.
+ *
+ * The hash value for an expression depends on its type:
+ * - null: 0
+ * - boolean: 0 for true, 1 for false.
--- End diff --
Looks like in Hive hash value of boolean is 1 for true and 0 for false?
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