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https://issues.apache.org/jira/browse/FLINK-14613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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hailong wang updated FLINK-14613:
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Description:
In Temporal Table Join, We don't support using UDF in tempral table join key.
For we can't analyze LookupKeys when call is an expression. When users use
like this, the program run normally, and the result will be wrong. So we
should add validation to prevent it.
The SQL as following:
{code:java}
INSERT INTO A
SELECT B.amount, B.currency, C.amount, C.product
FROM B join C FOR SYSTEM_TIME AS OF B.proctime
on B.amount = cancat(C.amount, 'r') and C.product = '1'
{code}
was:
In Temporal Table Join, We don't support using UDF in tempral table join key.
For we can't analyze LookupKeys when call is an expression. When users use
like this, the program run normally, and the result will be wrong. So we
should add validation to prevent it.
The SQL as following:
{code:java}
INSERT INTO A
SELECT B.amount, B.currency, C.amount, C.product
FROM B join C FOR SYSTEM_TIME AS OF B.proctime
on B.amount = C.amount and C.product = '1'
{code}
> Add validation check when applying UDF to tempral table key in Temporal
> Table Join condition
> -----------------------------------------------------------------------------------------------
>
> Key: FLINK-14613
> URL: https://issues.apache.org/jira/browse/FLINK-14613
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Affects Versions: 1.9.1
> Reporter: hailong wang
> Priority: Major
> Fix For: 1.10.0
>
>
> In Temporal Table Join, We don't support using UDF in tempral table join
> key. For we can't analyze LookupKeys when call is an expression. When users
> use like this, the program run normally, and the result will be wrong. So we
> should add validation to prevent it.
> The SQL as following:
> {code:java}
> INSERT INTO A
> SELECT B.amount, B.currency, C.amount, C.product
> FROM B join C FOR SYSTEM_TIME AS OF B.proctime
> on B.amount = cancat(C.amount, 'r') and C.product = '1'
> {code}
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