sunjincheng121 commented on a change in pull request #7196: [FLINK-10974]
[table] Add support for flatMap to table API
URL: https://github.com/apache/flink/pull/7196#discussion_r239273803
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/utils/UserDefinedFunctionUtils.scala
##########
@@ -795,7 +795,7 @@ object UserDefinedFunctionUtils {
"define table function followed by some Alias.")
}
- val functionCall: LogicalTableFunctionCall =
unwrap(ExpressionParser.parseExpression(udtf))
+ val functionCall: LogicalTableFunctionCall = unwrap(udtfExpr)
Review comment:
If we remove `as(Option(Seq[String]))`, we should change the usage looks
like as follows:
```
unwrap(udtfExpr).as(alias.getOrElse(Seq()).mkString(",")).toLogicalTableFunctionCall(child
= null)
```
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