Dian Fu created FLINK-19118:
-------------------------------
Summary: Support Expression in the operations of the Python Table
API
Key: FLINK-19118
URL: https://issues.apache.org/jira/browse/FLINK-19118
Project: Flink
Issue Type: Sub-task
Components: API / Python
Reporter: Dian Fu
Fix For: 1.12.0
Currently, it only supports string in the operations of the Python Table API.
For example:
{code}
>>> tab.group_by("key").select("key, value.avg")
{code}
After introducing the Expression class in FLINK-19114, it's possible to support
to use Expression in the operations in the Python Table API, e.g.
{code}
>>> tab.group_by(col("key")).select(col("key"), col("value").avg)
{code}
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