[jira] [Updated] (CALCITE-5987) SqlImplementor loses type information for literals

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-5987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated CALCITE-5987:
------------------------------------
    Labels: pull-request-available  (was: )

> SqlImplementor loses type information for literals
> --------------------------------------------------
>
>                 Key: CALCITE-5987
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5987
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.35.0
>            Reporter: Mihai Budiu
>            Assignee: Mihai Budiu
>            Priority: Minor
>              Labels: pull-request-available
>
> When converting a SqlNode to a String query, the conversion can produce SQL that computes different results. This happens because literals do not carry type information in the result string. For example, this plan:
> {code}
> rel#7:LogicalValues.(type=RecordType(VARCHAR(3) EXPR$0),tuples=[{ 'A' }])
> {code}
> will generate a SQL query:
> {code}
> SELECT 'A'
> {code}
> While the type of the former result is VARCHAR(3), the latter query produces a CHAR(1) result.
> It would be nice if SqlImplementor had an option to produce a query that preserves the output type, e.g.:
> {code}
> SELECT (CAST 'A' as VARCHAR(3))
> {code}



--
This message was sent by Atlassian Jira
(v8.20.10#820010)