[jira] [Created] (FLINK-27449) The comment is lost when printing table schema

["Yuan Huang (Jira)" <ji...@apache.org>]

Yuan Huang  created FLINK-27449:
-----------------------------------

             Summary: The comment is lost when printing table schema
                 Key: FLINK-27449
                 URL: https://issues.apache.org/jira/browse/FLINK-27449
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / API
    Affects Versions: 1.14.4
            Reporter: Yuan Huang 
         Attachments: test_result.png

User reported that the comment was lost when printing the table schema.

So this test will fail:
```

@Test
public void test() {
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
StreamTableEnvironment tableEnv = StreamTableEnvironment.create(env);
DataStream<String> dataStream = env.fromElements("Alice", "Bob", "John");
Schema.Builder builder = Schema.newBuilder();
builder.column("f0", DataTypes.of(String.class)).withComment("this is a comment");

Table table = tableEnv.fromDataStream(dataStream, builder.build()).as("user_name");
table.getResolvedSchema();
table.printSchema();
String expected = "(\n `user_name` STRING COMMENT 'this is a comment'\n)";
Assert.assertEquals(expected, table.getResolvedSchema().toString());
}

```

 

!test_result.png!

 

Is it a bug or just meets our expectations?

 



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