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Posted to issues@calcite.apache.org by "Hequn Cheng (JIRA)" <ji...@apache.org> on 2018/05/21 12:51:00 UTC
[jira] [Updated] (CALCITE-2321) Support ragged fixed length value
union be variable
[ https://issues.apache.org/jira/browse/CALCITE-2321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hequn Cheng updated CALCITE-2321:
---------------------------------
Description:
The {{shouldRaggedFixedLengthValueUnionBeVariable()}} function in {{SqlTypeFactoryImpl}} always return false now. It is good to make it configurable since some system may need the function to return true to provide pragmatic behavior. For example, for the sql: case 1 when 1 then 'a' when 2 then 'bcd' end, we need the return value to be 'a' instead of 'a ' of CHAR(3).
I see one option to solve this issue: Add {{boolean shouldRaggedFixedLengthValueUnionBeVariable()}} in {{RelDataTypeSystem}}, so external system can override to configure the value.
Any suggestions are welcomed. Thanks a lot.
was:
The {{shouldRaggedFixedLengthValueUnionBeVariable()}} function in {{SqlTypeFactoryImpl}} always return false now. It is good to make it configurable since some system may need the function to return true to provide pragmatic behavior.
I see one option to solve this issue: Add {{boolean shouldRaggedFixedLengthValueUnionBeVariable()}} in {{RelDataTypeSystem}}, so external system can override to configure the value.
Any suggestions are welcomed. Thanks a lot.
> Support ragged fixed length value union be variable
> ---------------------------------------------------
>
> Key: CALCITE-2321
> URL: https://issues.apache.org/jira/browse/CALCITE-2321
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Reporter: Hequn Cheng
> Assignee: Hequn Cheng
> Priority: Major
>
> The {{shouldRaggedFixedLengthValueUnionBeVariable()}} function in {{SqlTypeFactoryImpl}} always return false now. It is good to make it configurable since some system may need the function to return true to provide pragmatic behavior. For example, for the sql: case 1 when 1 then 'a' when 2 then 'bcd' end, we need the return value to be 'a' instead of 'a ' of CHAR(3).
> I see one option to solve this issue: Add {{boolean shouldRaggedFixedLengthValueUnionBeVariable()}} in {{RelDataTypeSystem}}, so external system can override to configure the value.
> Any suggestions are welcomed. Thanks a lot.
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