yifan-c commented on PR #4411:
URL: https://github.com/apache/cassandra/pull/4411#issuecomment-3524114591
Found one major issue. Please see the example below.
```sql
cqlsh> CREATE KEYSPACE keyspace1 WITH replication = {'class':
'SimpleStrategy', 'replication_factor': '1'};
cqlsh> CREATE TABLE keyspace1.tbl (key int PRIMARY KEY);
cqlsh> COMMENT ON COLUMN keyspace1.tbl.key is 'a''b'; <-- the comment text
uses the escaped single quote, ''. It is allowed.
cqlsh> DESC TABLE keyspace1.tbl;
CREATE TABLE keyspace1.tbl (
key int PRIMARY KEY
) WITH ...;
COMMENT ON COLUMN keyspace1.tbl.key IS 'a'b';
```
The output `COMMENT ON COLUMN keyspace1.tbl.key IS 'a'b';` cannot be
imported into another Cassandra database.
I think you either reject `'` in comment (and security label too) or print
the escaped single quote in the `DESC` output.
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