[FLINK-17420] Cannot alias Tuple and Row fields when converting DataStream to Table

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.10.0, 1.10.1
• Fix Version/s: 1.10.2, 1.11.0
• Component/s: Table SQL / API
• Labels: pull-request-available
• Assignee: Leonard Xu
• Reporter: Gyula Fora
• Created: 27/Apr/20 15:33
• Updated: 07/May/20 11:19
• Resolved: 07/May/20 11:19

Description

It is impossible to alias Tuple and Row fields when converting DataStream to Table.

tableEnv.fromDataStream(env.fromElements(Tuple2.of("a", 1)), "f0 as name, f1 as age");

This leads to the following error:

Alias 'name' is not allowed if other fields are referenced by position

org.apache.flink.table.typeutils.FieldInfoUtils#isReferenceByPosition method

More info: https://lists.apache.org/thread.html/re35f37797692af4e9e0e2512dedf0f598e0cdbe1ac4820103d4273c1%40%3Cuser.flink.apache.org%3E

Issue Links

• links to: GitHub Pull Request #11951
• links to: GitHub Pull Request #11954