Github user sujith71955 commented on a diff in the pull request:
https://github.com/apache/spark/pull/17649#discussion_r112840921
--- Diff:
sql/core/src/test/resources/sql-tests/inputs/describe-table-after-alter-table.sql
---
@@ -0,0 +1,29 @@
+CREATE TABLE table_with_comment (a STRING, b INT, c STRING, d STRING)
USING parquet COMMENT 'table_comment';
+
+DESC formatted table_with_comment;
+
+-- ALTER TABLE BY MODIFYING COMMENT
+ALTER TABLE table_with_comment set tblproperties(comment = "modified
comment");
--- End diff --
modified the testcase as per comment, added one more proeprty while
altering the table.
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