Gengliang Wang created SPARK-37714:
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Summary: ANSI mode: allow casting between numeric type and
datetime type by default
Key: SPARK-37714
URL: https://issues.apache.org/jira/browse/SPARK-37714
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.3.0
Reporter: Gengliang Wang
Assignee: Gengliang Wang
By default, allow casting between numeric type and datetime type under ANSI
mode
This is for better adoption of ANSI SQL mode:
* As we did some data science, we found that many Spark SQL users are actually
using {{Cast(Timestamp as Numeric)}} and {{{}Cast(Numeric as Timestamp){}}}.
There are also some usages of {{{}Cast(Date as Numeric){}}}.
* The Spark SQL connector for Tableau is using this feature for DateTime math.
e.g.
{{CAST(FROM_UNIXTIME(CAST(CAST(%1 AS BIGINT) + (%2 * 86400) AS BIGINT)) AS
TIMESTAMP)}}
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