kasakrisz commented on code in PR #5681:
URL: https://github.com/apache/hive/pull/5681#discussion_r1986764052
##########
ql/src/test/queries/clientpositive/cbo_case_when_type_conversion.q:
##########
@@ -0,0 +1,17 @@
+CREATE TABLE t1 (col1 char(3));
+
+INSERT INTO t1 VALUES ('A'),('b'),('c'),(null);
+
+explain cbo
+select col1, case upper(col1) when 'A' then 'OK' else 'N/A' end as col2 from
t1;
+explain
+select col1, case upper(col1) when 'A' then 'OK' else 'N/A' end as col2 from
t1;
+
+select col1, case upper(col1) when 'A' then 'OK' else 'N/A' end as col2 from
t1;
+
+select col1,
Review Comment:
I wanted to add a test when the case expression has multiple when branches
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