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Dian Fu commented on CALCITE-2033:
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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.
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