Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/21886#discussion_r205933861
--- Diff:
sql/core/src/test/resources/sql-tests/results/intersect-all.sql.out ---
@@ -0,0 +1,212 @@
+-- Automatically generated by SQLQueryTestSuite
+-- Number of queries: 17
+
+
+-- !query 0
+CREATE TEMPORARY VIEW tab1 AS SELECT * FROM VALUES
+ (1, 2),
+ (1, 2),
+ (1, 3),
--- End diff --
also add another duplicate row (1, 3)
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