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https://issues.apache.org/jira/browse/BEAM-9879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17132207#comment-17132207
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Beam JIRA Bot commented on BEAM-9879:
-------------------------------------
This issue is assigned but has not received an update in 30 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Support STRING_AGG in BeamSQL
> -----------------------------
>
> Key: BEAM-9879
> URL: https://issues.apache.org/jira/browse/BEAM-9879
> Project: Beam
> Issue Type: Task
> Components: dsl-sql, dsl-sql-zetasql
> Reporter: Rui Wang
> Assignee: Qihang Zeng
> Priority: P2
> Labels: stale-assigned
>
> Support STRING_AGG function in ZetaSQL dialect. (Also if Calcite has this
> function built-in, support it in Calcite dialect too)
> See the reference:
> https://cloud.google.com/bigquery/docs/reference/standard-sql/aggregate_functions#string_agg
> Examples:
> {code:sql}
> SELECT STRING_AGG(fruit) AS string_agg
> FROM UNNEST(["apple", NULL, "pear", "banana", "pear"]) AS fruit;
> +------------------------+
> | string_agg |
> +------------------------+
> | apple,pear,banana,pear |
> +------------------------+
> {code}
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