hanyuzheng7 opened a new pull request, #23184: URL: https://github.com/apache/flink/pull/23184
## What is the purpose of the change The hashcode function generates a hash code for a given input value, including support for computing hash values of binary data types. It creates a unique integer that represents the value passed to the function. This is an internal function. ## Brief change log HASHCODE for Table API ## Syntax: `HASHCODE(value)` ## Arguments: value: the value to be hashed. ## Returns: The function returns a unique integer representing the hash code of the value. If the input argument is NULL, the function returns NULL. ## Verifying this change Because it is an internal function now, so we cannot use select hashcode(value) to test it, so we use ArrayInterect function test case to test our hashcode function CollectionFunctionsITCase ## see also: Java: https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode-- Python: https://docs.python.org/3/library/functions.html#hash C#: https://docs.microsoft.com/en-us/dotnet/api/system.object.gethashcode SQL Server: https://docs.microsoft.com/en-us/sql/t-sql/functions/checksum-transact-sql MySQL: https://dev.mysql.com/doc/refman/8.0/en/encryption-functions.html#function_md5 PostgreSQL: https://www.postgresql.org/docs/current/pgcrypto-hash.html Oracle: https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/ORA-HASH.html Google Cloud BigQuery: https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#farm_fingerprint AWS Redshift: https://docs.aws.amazon.com/redshift/latest/dg/MD5.html ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / no) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / no) - The serializers: (yes / no / don't know) - The runtime per-record code paths (performance sensitive): (yes / no / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (yes / no / don't know) - The S3 file system connector: (yes / no / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / no) - If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented) -- 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
