hanyuzheng7 opened a new pull request, #23145: URL: https://github.com/apache/flink/pull/23145
### What is the purpose of the change This is an implementation of ARRAY_CONCAT The array_concat() function concatenates at least one array, creating an array that contains all the elements in the first array followed by all the elements in the second array ... followed by all the elements in the n array. ### Brief change log ARRAY_CONCAT for Table API and SQL Syntax: `ARRAY_CONCAT(arr1, tail...) ` Arguments: array: at least one ARRAY to be handled. Returns: The function returns NULL if any input argument is NULL. Examples: `Flink SQL> SELECT array_concat(array[1, 2, 3, null, 3], array[3], array[5]); [1, 2, 3, null, 3, 3, 5]` see also: Google Cloud BigQuery: https://cloud.google.com/bigquery/docs/reference/standard-sql/array_functions#array_concat ### Verifying this change - This change added tests in CollectionFunctionsITCase. ### Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - The public API, i.e., is any changed class annotated with @Public(Evolving): (yes) - The serializers: (no) - The runtime per-record code paths (performance sensitive): (no) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no) - The S3 file system connector: (no) ### Documentation - Does this pull request introduce a new feature? (yes) - If yes, how is the feature documented? (docs) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
