[
https://issues.apache.org/jira/browse/SPARK-28589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gengliang Wang updated SPARK-28589:
-----------------------------------
Description:
The type conversion in current Spark can be improved by learning from
PostgreSQL:
1. The table insertion should disallow certain type conversions(string -> int),
see
https://docs.google.com/document/d/1b9nnWWbKVDRp7lpzhQS1buv1_lDzWIZY2ApFs5rBcGI/edit#heading=h.82w8qxfl2uwl
2. Spark should return null result on cast an out-of-range value to an integral
type, instead of returning a value with lower bits.
3. We can have a new optional mode: throw runtime exceptions on casting failures
4. improve the implicit casting
etc..
was:
The type conversion in current Spark can be improved by learning from
PostgreSQL:
1. The table insertion should disallow certain type conversions(string -> int),
see
https://docs.google.com/document/d/1b9nnWWbKVDRp7lpzhQS1buv1_lDzWIZY2ApFs5rBcGI/edit#heading=h.82w8qxfl2uwl
2. Spark should return null result on cast an out-of-range value to an integral
type, instead of returning a value with lower bits.
3. We can have a new optional mode: throw runtime exceptions on casting failures
4. improve the implicit casting
> Follow the type conversion rules of PostgreSQL
> ----------------------------------------------
>
> Key: SPARK-28589
> URL: https://issues.apache.org/jira/browse/SPARK-28589
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Gengliang Wang
> Priority: Major
> Attachments: type_conversion.txt
>
>
> The type conversion in current Spark can be improved by learning from
> PostgreSQL:
> 1. The table insertion should disallow certain type conversions(string ->
> int), see
> https://docs.google.com/document/d/1b9nnWWbKVDRp7lpzhQS1buv1_lDzWIZY2ApFs5rBcGI/edit#heading=h.82w8qxfl2uwl
> 2. Spark should return null result on cast an out-of-range value to an
> integral type, instead of returning a value with lower bits.
> 3. We can have a new optional mode: throw runtime exceptions on casting
> failures
> 4. improve the implicit casting
> etc..
--
This message was sent by Atlassian JIRA
(v7.6.14#76016)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
