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https://issues.apache.org/jira/browse/CALCITE-1833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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yuemeng updated CALCITE-1833:
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Description:
If we implement a function which is subclass of AggregateFunction,that function
will be transform to SqlUserDefinedAggFunction in CalciteCatalogReader.
all parametesTypes information contain by that funcion ,But that function only
as an instance in SqlUserDefinedAggFunction .when construct the
SqlUserDefinedAggFunction instance will set paramTypes to null for super class
sqlFunction indirectly.
The problem is:
we will get SqlUserDefinedAggFunction paramTypes to sql validatefilte,but it
will be filter nothing
was:
If we implement a function which is instance of AggregateFunction,that function
will be transform to SqlUserDefinedAggFunction in CalciteCatalogReader.
all parametesTypes information contain by that funcion ,But that function only
as an instance in SqlUserDefinedAggFunction .when construct the
SqlUserDefinedAggFunction instance will set paramTypes to null for super class
sqlFunction indirectly.
The problem is:
we will get SqlUserDefinedAggFunction paramTypes to sql validatefilte,but it
will be filter nothing
> SqlAggFunction need new constructor to set paramTypes not be null for support
> multiple parameters for udaf
> ----------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-1833
> URL: https://issues.apache.org/jira/browse/CALCITE-1833
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.12.0
> Reporter: yuemeng
> Assignee: Julian Hyde
> Priority: Blocker
>
> If we implement a function which is subclass of AggregateFunction,that
> function will be transform to SqlUserDefinedAggFunction in
> CalciteCatalogReader.
> all parametesTypes information contain by that funcion ,But that function
> only as an instance in SqlUserDefinedAggFunction .when construct the
> SqlUserDefinedAggFunction instance will set paramTypes to null for super
> class sqlFunction indirectly.
> The problem is:
> we will get SqlUserDefinedAggFunction paramTypes to sql validatefilte,but it
> will be filter nothing
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