gatorsmile commented on a change in pull request #24782: 
[SPARK-27934][SQL][TEST] Port case.sql
URL: https://github.com/apache/spark/pull/24782#discussion_r291935446
 
 

 ##########
 File path: sql/core/src/test/resources/sql-tests/inputs/pgSQL/case.sql
 ##########
 @@ -0,0 +1,267 @@
+--
+-- Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
+--
+--
+-- CASE
+-- 
https://github.com/postgres/postgres/blob/REL_12_BETA1/src/test/regress/sql/case.sql
+-- Test the case statement
+--
+-- There are 2 join condition is missing in this test case. we set 
spark.sql.crossJoin.enabled=true.
 
 Review comment:
   How about rewriting it to the following text?
   > This test suite contains two Cartesian products without using explicit 
CROSS JOIN syntax. Thus, we set spark.sql.crossJoin.enabled to true.

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