Re: Relational algebra and signal processing

2018-12-17 Thread Julian Feinauer
Hi Michael, yes, our workloads are usually in the context of streaming (but for replay or so we also use batch). But, if I understand it correctly, the same theory applies to both, tables ("relations") and streaming tables, or? I hope to find time soon to write a PLC4X - Calicte source which

Re: [DISCUSS] Towards Calcite 1.18

2018-12-17 Thread Julian Hyde
Zoltan, Can you give us a status update please? The release train is waiting for you. Julian > On Dec 16, 2018, at 12:20 PM, Julian Hyde wrote: > > An update on release 1.18. > > We have had two release candidates RC0 and RC1, and both votes have > been cancelled due to faults found by

Re: Relational algebra and signal processing

2018-12-17 Thread Michael Mior
Perhaps you've thought of this already, but it sounds like streaming relational algebra could be a good fit here. https://calcite.apache.org/docs/stream.html -- Michael Mior mm...@apache.org Le dim. 16 déc. 2018 à 18:39, Julian Feinauer a écrit : > Hi Calcite-devs, > > I just had a very

Re: Can’t seem to parse DDL staements

2018-12-17 Thread Michael Mior
Support for some DDL is missing. See for example https://issues.apache.org/jira/browse/CALCITE-2663 -- Michael Mior mm...@apache.org Le lun. 17 déc. 2018 à 15:40, Dilip Raj Baral a écrit : > Hi, Ted. > > Thanks for the information. That was very helpful. I was not aware of > calcite-server

Re: Can’t seem to parse DDL staements

2018-12-17 Thread Dilip Raj Baral
Hi, Ted. Thanks for the information. That was very helpful. I was not aware of calcite-server sub project. Also, on a quick look I found missing support for TRUNCATE TABLE, CREATE PROCEDURE and CREATE FUNCTION? Are they not available for real of am I missing something? On 17 December 2018 at

[jira] [Created] (CALCITE-2745) RexSimplify fails with ClassCastException when the expression contains comparisons of operands with different types

2018-12-17 Thread Volodymyr Vysotskyi (JIRA)
Volodymyr Vysotskyi created CALCITE-2745: Summary: RexSimplify fails with ClassCastException when the expression contains comparisons of operands with different types Key: CALCITE-2745 URL:

Re: Problems about subsets clause order for MATCH_RECOGNIZE

2018-12-17 Thread bupt_ljy
Hi, It makes sense to me. Thanks for the introductions. Best, Jiayi Liao Original Message Sender:Dawid wysakowiczdwysakow...@apache.org Recipient:bupt_ljybupt_...@163.com; dev...@calcite.apache.org; Julian hydejh...@apache.org Date:Monday, Dec 17, 2018 16:52 Subject:Re: Problems about

Re: Problems about subsets clause order for MATCH_RECOGNIZE

2018-12-17 Thread Dawid Wysakowicz
Hi Jiayi, not sure what you mean by elements' order in SUBSET, so I'd try to rephrase it. What I mean is that the order of pattern variables in SUBSET clause does not matter. User can put them in whatever order he/she likes. LAST/FIRST etc. will account for the order in PATTERN clause. So in