[ 
https://issues.apache.org/jira/browse/CALCITE-2033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16240126#comment-16240126
 ] 

Dian Fu commented on CALCITE-2033:
----------------------------------

I have created a PR which introduces a new operator {{->}} to support this. May 
be other operators? Any advice?
For example, for pattern {{A -> B}}, it means that there may be other kinds of 
events between the events matching pattern {{A}} and {{B}}.
https://github.com/apache/calcite/pull/558

Hi [~julianhyde] [~ransom], what do you think about this functionality? If you 
think it makes sense, could you help to take a look at this PR? Thanks a lot.

> Support followed by in pattern definition for MATCH_RECOGNIZE
> -------------------------------------------------------------
>
>                 Key: CALCITE-2033
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2033
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Dian Fu
>            Assignee: Julian Hyde
>
> The [doc|https://docs.oracle.com/database/121/DWHSG/pattern.htm#DWHSG8986] 
> has already defined pattern operator {{Concatenation}}. For example, pattern 
> {{A B}} means that events matching pattern {{A}} and {{B}} should occur 
> successively. There are also many use cases which require patterns to match 
> events which not occur successively.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Reply via email to