[ 
https://issues.apache.org/jira/browse/CALCITE-1911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16119167#comment-16119167
 ] 

Julian Hyde commented on CALCITE-1911:
--------------------------------------

I think it's just a matter of generating the interval string when you create a 
SqlIntervalLiteral. I think you can write a for loop from the start time unit 
to the end time unit, and putting TimeUnit.separator between them.

Can you add a unit test to RelToSqlConverterTest that checks that RexLiteral to 
SqlIntervalLiteral conversion works for "VALUES INTERVAL '1-2' YEAR TO MONTH" 
and a few other kinds of intervals.

> Support WITHIN clause in MATCH_RECOGNIZE
> ----------------------------------------
>
>                 Key: CALCITE-1911
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1911
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Dian Fu
>            Assignee: Julian Hyde
>              Labels: match
>
> Window is an important feature for pattern detection, it defines the time 
> duration for the events to match a pattern. Here is an example from 
> [doc|https://docs.oracle.com/middleware/1213/eventprocessing/cql-reference/GUID-34D4968E-C55A-4BC7-B1CE-C84B202217BD.htm#CQLLR2119]:
> {code}
> SELECT T.Ac2, T.Bc2, T.Cc2 
>     FROM S
>     MATCH_RECOGNIZE(
>         MEASURES A.c2 as Ac2, B.c2 as Bc2, C.c2 as Cc2
>         PATTERN (A (B+ | C)) within 3000 milliseconds 
>         DEFINE 
>             A as A.c1=10 or A.c1=25, 
>             B as B.c1=20 or B.c1=15 or B.c1=25, 
>             C as C.c1=15
>     ) as T
> {code}



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

Reply via email to