soumyakanti3578 commented on code in PR #5781:
URL: https://github.com/apache/hive/pull/5781#discussion_r2074375842
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iceberg/iceberg-handler/src/test/queries/positive/merge_with_null_check_on_joining_col.q:
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@@ -0,0 +1,24 @@
+
+create table target(a int, b int, c int) stored by iceberg
tblproperties('format-version'='2', 'write.merge.mode'='copy-on-write');
+create table source(a int, b int, c int) stored by iceberg
tblproperties('format-version'='2', 'write.merge.mode'='copy-on-write');
+
+-- empty plan as joining column cannot be null for matched clause
+explain cbo
+merge into target as t using source as s on t.a = s.a and t.b = s.b
+when matched and t.a is null then delete;
+
+explain cbo
+merge into target as t using source as s on t.a = s.a and t.b = s.b
+when matched and t.a is null then update set b = t.b + 10;
Review Comment:
I can add more tests 👍🏼
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