[teiid-issues] [JBoss JIRA] (TEIID-4228) ODBC "Parse Statements" option can result in changes in LENGTH metadata for columns

[Steve Tran (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-4228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13258876#comment-13258876 ] 

Steve Tran commented on TEIID-4228:
-----------------------------------

I think we only need a validation warning/error message because once identified, it's not hard to fix in the VDB metadata via Teiid Designer.  Like you said, this only affects one usage scenario (SQL Server) that we know of so far.

> ODBC "Parse Statements" option can result in changes in LENGTH metadata for columns
> -----------------------------------------------------------------------------------
>
>                 Key: TEIID-4228
>                 URL: https://issues.jboss.org/browse/TEIID-4228
>             Project: Teiid
>          Issue Type: Bug
>          Components: ODBC
>    Affects Versions: 8.7
>         Environment: Connections through ODBC driver
>            Reporter: Marc Shirley
>            Assignee: Steven Hawkins
>            Priority: Minor
>             Fix For: 9.x
>
>
> Connections through ODBC driver with the driver setting "Parse Statements" option enabled can result in incorrect length values being passed to the client.  In some cases (such as SQL Server linked server capabilities), this can result in the client throwing exceptions due to the expected LENGTH changing during the course of the query execution.
> This may be limited to columns with precision set to 0, as the SQL Server linked server case was corrected when the precision was changed from 0 to 9 for the column specified in the error.



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