holdenk commented on code in PR #46143:
URL: https://github.com/apache/spark/pull/46143#discussion_r2848942212


##########
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/FilterPushdownSuite.scala:
##########
@@ -258,6 +239,23 @@ class FilterPushdownSuite extends PlanTest {
     comparePlans(optimized, correctAnswer)
   }
 
+  // Case 3: Filter references expensive to compute references.
+  test("SPARK-47672: Avoid double evaluation with projections can't push past 
certain items") {
+    val originalQuery = testStringRelation
+      .select($"a", $"e".rlike("magic") as "f")
+      .where($"a" > 5 || $"f")
+      .analyze
+
+    val optimized = Optimize.execute(originalQuery)
+
+    val correctAnswer = testStringRelation

Review Comment:
   True, let me simplify



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