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From rxin <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-7286] [SQL] Deprecate !== in favour of ...
Date Tue, 24 Nov 2015 02:12:39 GMT
Github user rxin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/9925#discussion_r45690003
  
    --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/dsl/package.scala
---
    @@ -83,7 +83,10 @@ package object dsl {
         def >= (other: Expression): Predicate = GreaterThanOrEqual(expr, other)
         def === (other: Expression): Predicate = EqualTo(expr, other)
         def <=> (other: Expression): Predicate = EqualNullSafe(expr, other)
    --- End diff --
    
    It's null safe equality test, i.e. comparing null and null should return true rather than
null.



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