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Posted to dev@flink.apache.org by "sunjincheng (JIRA)" <ji...@apache.org> on 2018/11/22 02:46:00 UTC
[jira] [Created] (FLINK-10974) Add FlatMap to TableAPI
sunjincheng created FLINK-10974:
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Summary: Add FlatMap to TableAPI
Key: FLINK-10974
URL: https://issues.apache.org/jira/browse/FLINK-10974
Project: Flink
Issue Type: Sub-task
Components: Table API & SQL
Reporter: sunjincheng
Fix For: 1.8.0
Add FlatMap operator to Table API as described in [Google doc|https://docs.google.com/document/d/1tnpxg31EQz2-MEzSotwFzqatsB4rNLz0I-l_vPa5H4Q/edit#heading=h.q23rny2iglsr].
The usageļ¼
{code:java}
val res = tab
.flatMap(fun: TableFunction) // output has columns 'a, 'b, 'c
.select('a, 'c)
{code}
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