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https://issues.apache.org/jira/browse/FLINK-27891?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-27891:
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Labels: pull-request-available stale-assigned (was: pull-request-available)
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> Add ARRAY_APPEND and ARRAY_PREPEND supported in SQL & Table API
> ---------------------------------------------------------------
>
> Key: FLINK-27891
> URL: https://issues.apache.org/jira/browse/FLINK-27891
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API
> Reporter: Sergey Nuyanzin
> Assignee: Sergey Nuyanzin
> Priority: Major
> Labels: pull-request-available, stale-assigned
>
> {{ARRAY_APPEND}} - adds element to the end of the array and returns the
> resulting array
> {{ARRAY_PREPEND}} - adds element to the beginning of the array and returns
> the resulting array
> Syntax:
> {code:sql}
> ARRAY_APPEND( <array> , <new_element> );
> ARRAY_PREPEND( <new_element> , <array> );
> {code}
> Arguments:
> array: An ARRAY to to add a new element.
> new_element: A new element.
> Returns:
> An array. If array is NULL, the result is NULL.
> Examples:
> {code:sql}
> SELECT array_append(array[1, 2, 3], 4);
> -- array[1, 2, 3, 4]
> select array_append(cast(null as int array), 2);
> -- null
> SELECT array_prepend(array[1, 2, 3], 4);
> -- array[4, 1, 2, 3]
> SELECT array_prepend(array[1, 2, 3], null);
> -- array[null, 1, 2, 3]
> {code}
> See more:
> {{ARRAY_APPEND}}
> Snowflake
> https://docs.snowflake.com/en/sql-reference/functions/array_append.html
> PostgreSQL
> https://www.postgresql.org/docs/14/functions-array.html#ARRAY-FUNCTIONS-TABLE
> {{ARRAY_PREPEND}}
> Snowflake
> https://docs.snowflake.com/en/sql-reference/functions/array_prepend.html
> PostgreSQL
> https://www.postgresql.org/docs/14/functions-array.html#ARRAY-FUNCTIONS-TABLE
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