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https://issues.apache.org/jira/browse/CALCITE-4729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
duan xiong reassigned CALCITE-4729:
-----------------------------------
Assignee: duan xiong
> Column in CTE should be ambiguous
> ---------------------------------
>
> Key: CALCITE-4729
> URL: https://issues.apache.org/jira/browse/CALCITE-4729
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Lantao Jin
> Assignee: duan xiong
> Priority: Major
>
> {code}
> create table test (a int);
> with t as
> (
> select * from test t1 join test t2 on t1.a=t2.a
> )
> select t.a from t;
> {code}
> The above query fails with 't.a' is ambiguous in Spark/Presto/Postgres. But
> it succeeds in Calcite. Currently, many and many companies use Calcite as a
> query federation layer upon multiple query engines such as Spark and Presto.
> But this behavior confused users.
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