Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/14240#discussion_r71506928 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/sources/PrunedScanSuite.scala --- @@ -114,16 +114,15 @@ class PrunedScanSuite extends DataSourceTest with SharedSQLContext { testPruning("SELECT * FROM oneToTenPruned", "a", "b") testPruning("SELECT a, b FROM oneToTenPruned", "a", "b") testPruning("SELECT b, a FROM oneToTenPruned", "b", "a") - testPruning("SELECT b, b FROM oneToTenPruned", "b") + testPruning("SELECT b, b FROM oneToTenPruned", "b", "b") + testPruning("SELECT b as alias_b, b FROM oneToTenPruned", "b") --- End diff -- I don't quite understand this, why they are different?
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