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From Christian Beikov <>
Subject Sequence support
Date Thu, 10 Aug 2017 17:27:44 GMT

I am new to Calcite but I already got quite far with integrating it into 
a test project. Now I am a bit stuck and I am not sure what is happening.

I would like to use Calcite for data federation, but first I am trying 
to simply put it between the application and the actual JDBC connection. 
I read something on the website that operations aren't pushed down to 
JDBC schemas yet? That would be unfortunate as that is something I 
actually need. Can you confirm what the status of that is?

While trying to insert data, I noticed that SQL sequences don't seem to 
be supported. Is there a special undocumented syntax for retrieving 
sequence values? I tried "next value for SEQUENCE" as something in 
SqlKind was suggesting that might be the appropriate syntax but it 
didn't work.

Finally, I also noticed that transactions don't seem to work properly. 
Apparently CalciteMetaImpl#commit throws an 
UnsupportedOperationException? Am I missing something here or is that a 
current limitation?

Thanks in advance!


Mit freundlichen Grüßen,
*Christian Beikov*

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