#DateForumTypeThreadPost
1131 Aug 2016 @ 04:59 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityThanks Tom!  I'll see about getting our client to do as you've suggested.
1030 Aug 2016 @ 06:10 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityTom, what would be the next steps for this?  Is there another system I should be putting this request into?  How would I track when it is likely to be resolved and a patch provided?  ...
924 Aug 2016 @ 06:36 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityI can see why it would be important to preserve existing behaviour, and I think the approach of using a connection parameter as you've described would work well.
823 Aug 2016 @ 06:55 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullability> The javadoc for the ResultSetMetaData.isNullable method is fairly clear that the method returns information about the underlying storage column ... I'm really not so sure about this ...
722 Aug 2016 @ 11:53 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityAnd as a follow-up question, could the driver use isNullable=N + mayBeNull=Y to instead return columnNullableUnknown?
622 Aug 2016 @ 06:31 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityOut of interest, what is the logic behind the property "mayBeNull" on FullContentMetadataItem?  I'm noticing that it differs from the isNullable property in the second query...
522 Aug 2016 @ 04:58 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityI really appreciate the effort you've put in.  Looks like this is defintely an a issue in the database server itself (not the driver/connectivity).
421 Aug 2016 @ 09:07 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityI've put together an example outside of the Spark application which has confirmed my suspicion above (using 15.10.00.22): val driver = new com.teradata.jdbc.TeraDriver() val url = "jdb...
319 Aug 2016 @ 04:45 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityTrue, it is reducing a three-value to a boolean by mapping the unknown to nullable = true, and this might explain case #1. But I can see an actual problem in case #2 where every column was re...
218 Aug 2016 @ 07:06 PDTConnectivityReplyTeradata JDBC Driver returns the wrong schema / column nullabilityThe call is made in Apache Spark's infrastructure, and it uses ResultSetMetaData.isNullable as you expected: https://github.com/apache/spark/blob/v2.0.0/sql/core/src/main/scala/org/apache/spar...
117 Aug 2016 @ 11:59 PDTConnectivityTopicTeradata JDBC Driver returns the wrong schema / column nullabilityI'm running an Apache Spark application that uses terajdbc4 to fetch data from a Teradata server.  It seems to be returning the wrong value for the nullability for many of the columns in t...