Zha Ji created FLINK-28132:
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Summary: Should we remove type validations when using lookup-key
join ?
Key: FLINK-28132
URL: https://issues.apache.org/jira/browse/FLINK-28132
Project: Flink
Issue Type: Improvement
Components: Connectors / JDBC, Table SQL / Planner
Affects Versions: 1.15.0
Reporter: Zha Ji
As described in https://issues.apache.org/jira/browse/FLINK-18234
Execute sql
{color:#6a8759}select * from t left join jdbc_source for system_time as of
t.proctime AS j on t.id = j.id{color}
t.id(VARCHAR) j.id(INT) will throw exception
org.apache.flink.table.api.TableException: VARCHAR(2147483647) and INTEGER does
not have common type now
If I remove some type validation codes, the sql works well on MySQL
Is it necessary to check data types when we join stream data to dynamic tables
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