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https://issues.apache.org/jira/browse/FLINK-7439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16155122#comment-16155122
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ASF GitHub Bot commented on FLINK-7439:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4536#discussion_r137221865
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/utils/TableSqlFunction.scala
---
@@ -40,17 +40,14 @@ class TableSqlFunction(
name: String,
udtf: TableFunction[_],
rowTypeInfo: TypeInformation[_],
- returnTypeInference: SqlReturnTypeInference,
- operandTypeInference: SqlOperandTypeInference,
- operandTypeChecker: SqlOperandTypeChecker,
- paramTypes: util.List[RelDataType],
+ typeFactory: FlinkTypeFactory,
functionImpl: FlinkTableFunctionImpl[_])
extends SqlUserDefinedTableFunction(
new SqlIdentifier(name, SqlParserPos.ZERO),
- returnTypeInference,
- operandTypeInference,
- operandTypeChecker,
- paramTypes,
+ ReturnTypes.CURSOR,
+ createOperandTypeInference(name, udtf, typeFactory),
+ createOperandTypeChecker(name, udtf),
+ null,
--- End diff --
Is it safe to pass `null` here? Couldn't we create this parameter from
`rowTypeInfo`?
> Support variable arguments for UDTF in SQL
> ------------------------------------------
>
> Key: FLINK-7439
> URL: https://issues.apache.org/jira/browse/FLINK-7439
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Jark Wu
> Assignee: Jark Wu
>
> Currently, both UDF and UDAF support variable parameters, but UDTF not.
> FLINK-5882 supports variable UDTF for Table API only, but missed SQL.
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