Danny Chen created FLINK-16609:
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Summary: Promotes the column name representation of SQL-CLI
Key: FLINK-16609
URL: https://issues.apache.org/jira/browse/FLINK-16609
Project: Flink
Issue Type: Improvement
Components: Table SQL / Client
Affects Versions: 1.10.0
Reporter: Danny Chen
Fix For: 1.11.0
The SQL-CLI now outputs the column name as the name that comes from the plan,
which is not that readable sometimes, i can think of 2 cases that can be
promoted:
1. Expression like "a + b" should output "a + b" instead of "$Expr{index}"
2. We should always output the alias if it's there, now, the alias in the plan
may be dropped because of 2 reasons:
- Project remove rule would remove the project without considering the alias
- after CALCITE-3713, some CALC/PROJ would be reused while ignoring the
column alias
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