[
https://issues.apache.org/jira/browse/FLINK-5710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15855986#comment-15855986
]
Haohui Mai edited comment on FLINK-5710 at 2/7/17 1:47 PM:
-----------------------------------------------------------
Can you please elaborate a little bit more, particularly how to generate a user
friendly message? For example:
{code}
SELECT FLOOR(procTime() TO HOURS) as ts, COUNT(*) FROM foo GROUP BY
FLOOR(procTime() TO HOURS)
{code}
The query translation can recognize certain usages of {{procTime()}} (e.g.,
{{FLOOR}}) but other usages might result in mysterious error messages (i.e.,
cannot do codegen for the {{procTime()}} function). Any ideas?
was (Author: wheat9):
Can you please elaborate a little bit more, particularly how the code generator
will work? For example:
{code}
SELECT COUNT(*) FROM foo GROUP BY FLOOR(procTime() TO HOURS)
{code}
Essentially {{procTime()}} becomes an expression and the code generator needs
to generate some code in order to execute the query. I have tried similar
things on {{rowTime()}} and I found that it is nontrivial to refer to the
datastream. Thoughts?
> Add ProcTime() function to indicate StreamSQL
> ---------------------------------------------
>
> Key: FLINK-5710
> URL: https://issues.apache.org/jira/browse/FLINK-5710
> Project: Flink
> Issue Type: New Feature
> Components: DataStream API
> Reporter: Stefano Bortoli
> Assignee: Stefano Bortoli
> Priority: Minor
>
> procTime() is a parameterless scalar function that just indicates processing
> time mode
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
