COMMENT ON TABLE compat_comment_table IS 'upgraded table comment';

Affected Rows: 0

COMMENT ON COLUMN compat_comment_table.val IS 'upgraded value column comment';

Affected Rows: 0

COMMENT ON FLOW compat_comment_flow IS 'upgraded flow comment';

Affected Rows: 0

SELECT table_schema, table_name, table_comment
FROM information_schema.tables
WHERE table_name = 'compat_comment_table'
ORDER BY table_schema, table_name;

+------------------------+----------------------+------------------------+
| table_schema           | table_name           | table_comment          |
+------------------------+----------------------+------------------------+
| comment_on_old_objects | compat_comment_table | upgraded table comment |
+------------------------+----------------------+------------------------+

SELECT table_schema, table_name, column_name, column_comment
FROM information_schema.columns
WHERE table_name = 'compat_comment_table'
  AND column_name = 'val'
ORDER BY table_schema, table_name, column_name;

+------------------------+----------------------+-------------+-------------------------------+
| table_schema           | table_name           | column_name | column_comment                |
+------------------------+----------------------+-------------+-------------------------------+
| comment_on_old_objects | compat_comment_table | val         | upgraded value column comment |
+------------------------+----------------------+-------------+-------------------------------+

SELECT flow_name, comment
FROM information_schema.flows
WHERE flow_name = 'compat_comment_flow'
ORDER BY flow_name;

+---------------------+-----------------------+
| flow_name           | comment               |
+---------------------+-----------------------+
| compat_comment_flow | upgraded flow comment |
+---------------------+-----------------------+