hehuiyuan created FLINK-18613:
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Summary: How to support retract & upsert sink for a TableSink ?
Key: FLINK-18613
URL: https://issues.apache.org/jira/browse/FLINK-18613
Project: Flink
Issue Type: Wish
Components: Table SQL / Planner
Reporter: hehuiyuan
Environment : FLink 1.9 / Blink planner
Hi , i want to ask a question :
I have a job that executes multiple sql and a TableSink class:
(1) insert into table_0 select count(*) from table1;
(2)insert into table_2 select name, sum(score) form table1 group by name;
The TableSink implements UpsertStreamTablesink interface.
That is ok for SQL (2), but is not suppported for SQL (1) which there are not
keys.
But i want to use a TableSink which can support the upsert and retract , can
you give me some advices? ~ Thanks.
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