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https://issues.apache.org/jira/browse/FLINK-10379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16625872#comment-16625872
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Piotr Nowojski commented on FLINK-10379:
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I think this might be a false alarm. Documented else where (
[https://ci.apache.org/projects/flink/flink-docs-release-1.6/dev/table/tableApi.html#joins]
) is the following syntax:
{code:java}
// register function
TableFunction<String> split = new MySplitUDTF();
tEnv.registerFunction("split", split);
// join
Table orders = tableEnv.scan("Orders");
Table result = orders
.leftOuterJoin(new Table(tEnv, "split(c)").as("s", "t", "v"))
.select("a, b, s, t, v");{code}
which seems to be working. So this issue is probably only about inconsistency
in the documentation.
I will fix the documentation and afterwards we probably can close this ticket.
> Can not use Table Functions in Java Table API
> ---------------------------------------------
>
> Key: FLINK-10379
> URL: https://issues.apache.org/jira/browse/FLINK-10379
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Affects Versions: 1.6.1
> Reporter: Piotr Nowojski
> Assignee: Hequn Cheng
> Priority: Critical
>
> As stated in the
> [documentation|[https://ci.apache.org/projects/flink/flink-docs-stable/dev/table/udfs.html#table-functions],]
> this is how table functions should be used in Java Table API:
> {code:java}
> // Register the function.
> tableEnv.registerFunction("split", new Split("#"));
> myTable.join("split(a) as (word, length)");
> {code}
> However {{Table.join(String)}} was removed sometime ago and now it is
> impossible to use Table Functions in Java Table API.
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