Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/6405#discussion_r31275158
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala
---
@@ -171,22 +171,32 @@ case class Or(left: Expression, right: Expression)
abstract class BinaryComparison extends BinaryExpression with Predicate {
self: Product =>
-}
-
-case class EqualTo(left: Expression, right: Expression) extends
BinaryComparison {
- override def symbol: String = "="
override def eval(input: Row): Any = {
- val l = left.eval(input)
- if (l == null) {
+ val evalE1 = left.eval(input)
+ if(evalE1 == null) {
--- End diff --
space after if
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