From 12347e66c1193fe2fb0af439de08d43919baed60 Mon Sep 17 00:00:00 2001
From: Takeshi Yamamuro <yamamuro@apache.org>
Date: Fri, 30 Jun 2017 14:17:43 +0900
Subject: [PATCH] Fix minor comments

---
 sql/core/src/main/scala/org/apache/spark/sql/Column.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sql/core/src/main/scala/org/apache/spark/sql/Column.scala b/sql/core/src/main/scala/org/apache/spark/sql/Column.scala
index b8d6835fba099..bd1669b6dba69 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/Column.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/Column.scala
@@ -468,7 +468,7 @@ class Column(val expr: Expression) extends Logging {
     val right = lit(other).expr
     if (this.expr == right) {
       logWarning(
-        s"Constructing trivially true equals predicate, '${this.expr} = $right'. " +
+        s"Constructing trivially true equals predicate, '${this.expr} <=> $right'. " +
           "Perhaps you need to use aliases.")
     }
     EqualNullSafe(expr, right)