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Incorrect nullability returned on Greenplum database columns created as null or not null.

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TitleIncorrect nullability returned on Greenplum database columns created as null or not null.
URL NameIncorrect-nullability-returned-on-Greenplum-database-columns-created-as-null-or-not-null
Article Number000120553
EnvironmentProduct: Connect for ODBC Greenplum driver
Version: All supported versions
OS: All supported platforms
Database: Greenplum
Application: All supported applications
Question/Problem Description
Incorrect nullability returned using the Connect for ODBC Greenplum driver on a Greenplum database with columns created  as null or not null.
Steps to ReproduceQuery the metadata on a table with a column specified as null or not null.
Clarifying Information
The DataDirect Greenplum driver returns a value of 2 which indicates that the nullability of a column's value is unknown.
Error Message
Defect Number
Enhancement Number
Cause
Resolution
An additional parameter needs to be passed during connection. 
Set the connection option "ExtendedColumnMetaData" (ECMD) to 1 in the data source located in the odbc.ini on UNIX/Linux.
On Windows, select the checkbox "Extended Column MetaData" in the advanced section of the Greenplum ODBC data source in the ODBC Administrator tool.

Refer to the DataDirect Documentation for additional information on driver connection parameters.
Workaround
Notes
Last Modified Date8/15/2018 5:29 PM
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