[jira] [Created] (SPARK-34881) New SQL Function: TRY_CAST

["Gengliang Wang (Jira)" <ji...@apache.org>]

Gengliang Wang created SPARK-34881:
--------------------------------------

             Summary: New SQL Function: TRY_CAST
                 Key: SPARK-34881
                 URL: https://issues.apache.org/jira/browse/SPARK-34881
             Project: Spark
          Issue Type: New Feature
          Components: SQL
    Affects Versions: 3.2.0
            Reporter: Gengliang Wang
            Assignee: Gengliang Wang


Add a new SQL function try_cast. try_cast is identical to CAST with `spark.sql.ansi.enabled` as true, except it returns NULL instead of raising an error. This expression has one major difference from `cast` with `spark.sql.ansi.enabled` as true: when the source value can't be stored in the target integral(Byte/Short/Int/Long) type, `try_cast` returns null instead of returning the low order bytes of the source value.

This is learned from Google BigQuery and Snowflake:
https://docs.snowflake.com/en/sql-reference/functions/try_cast.html
https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#safe_casting



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org