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https://issues.apache.org/jira/browse/CALCITE-7021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17952117#comment-17952117
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Zhen Chen commented on CALCITE-7021:
------------------------------------
[~nobigo]
parser.jj:6285
{code:java}
<INTERVAL> e = IntervalQualifier() { args.add(e); }{code}
change to this
{code:java}
<INTERVAL> [e = IntervalQualifier() { args.add(e); }] {code}
Then it can pass parser.jj, but it will be meet a failure in type deriving. Is
this what you want, or is completing the modification of type inference what
you want?
> Support parse 'CAST('1' AS INTERVAL)'
> --------------------------------------
>
> Key: CALCITE-7021
> URL: https://issues.apache.org/jira/browse/CALCITE-7021
> Project: Calcite
> Issue Type: Bug
> Reporter: xiong duan
> Priority: Major
>
> Now we have supported :
> {code:java}
> CAST(VALUE as INTERVAL YEAR)、CAST(VALUE as INTERVAL MONTH)、CAST(VALUE as
> INTERVAL DAY)、
> CAST(VALUE as INTERVAL HOUR)、CAST(VALUE as INTERVAL MINUTES)、CAST(VALUE as
> INTERVAL SECOND)
> {code}
> In postgreSQL：
> {code:java}
> CAST(VALUE as INTERVAL) ==> CAST(VALUE as INTERVAL SECOND)
> select cast('1' as interval);
> select cast('1' as interval second);
> ==>00:00:01
> {code}
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