[
https://issues.apache.org/jira/browse/FLINK-7922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rong Rong updated FLINK-7922:
-----------------------------
Description:
FlinkTypeFactory does not override the following function correctly:
{code:scala}
def leastRestrictive(types: util.List[RelDataType]): RelDataType = {
//...
}
{code}
to deal with situations like
{code:sql}
CASE
WHEN <CONDITION> THEN
<COMPOSITE_TYPE>
ELSE
NULL
END
{code}
will trigger runtime exception.
See following test sample for more details:
https://github.com/walterddr/flink/commit/a5f2affc9bbbd50f06200f099c90597e519e9170
was:
FlinkTypeFactory does not override the following function correctly:
`leastRestrictive(types: util.List[RelDataType]): RelDataType = { //... }`
to deal with situations like
```
CASE
WHEN <CONDITION> THEN
<COMPOSITE_TYPE>
ELSE
NULL
END
```
will trigger runtime exception
> leastRestrictive in FlinkTypeFactory does not resolve composite type correctly
> ------------------------------------------------------------------------------
>
> Key: FLINK-7922
> URL: https://issues.apache.org/jira/browse/FLINK-7922
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Affects Versions: 1.4.0
> Reporter: Rong Rong
>
> FlinkTypeFactory does not override the following function correctly:
> {code:scala}
> def leastRestrictive(types: util.List[RelDataType]): RelDataType = {
> //...
> }
> {code}
> to deal with situations like
> {code:sql}
> CASE
> WHEN <CONDITION> THEN
> <COMPOSITE_TYPE>
> ELSE
> NULL
> END
> {code}
> will trigger runtime exception.
> See following test sample for more details:
> https://github.com/walterddr/flink/commit/a5f2affc9bbbd50f06200f099c90597e519e9170
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