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https://issues.apache.org/jira/browse/DRILL-3597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Khurram Faraaz updated DRILL-3597:
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Assignee: (was: Sean Hsuan-Yi Chu)
> Disable RESPECT NULLS, IGNORE NULLS option for LEAD, LAG window functions
> -------------------------------------------------------------------------
>
> Key: DRILL-3597
> URL: https://issues.apache.org/jira/browse/DRILL-3597
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 1.2.0
> Reporter: Khurram Faraaz
> Fix For: Future
>
>
> The SQL standard defines a RESPECT NULLS or IGNORE NULLS option for lead,
> lag, first_value, and last_value window functions. We need to (disable it)
> and report a meaningful message to user if either of these two options is
> used in a query, with any of those functions.
> Currently we throw parse errors when these options are used in query.
> {code}
> 0: jdbc:drill:schema=dfs.tmp> select lead(c1,2) respect nulls over w from
> union_01 window w as (partition by c3 order by c1);
> Error: PARSE ERROR: Encountered "nulls" at line 1, column 27.
> Was expecting one of:
> "FROM" ...
> "," ...
>
> [Error Id: 73d09692-6374-41a2-bce0-db73d2828f1f on centos-04.qa.lab:31010]
> (state=,code=0)
> {code}
> {code}
> 0: jdbc:drill:schema=dfs.tmp> select lead(c1,2) ignore nulls over w from
> union_01 window w as (partition by c3 order by c1);
> Error: PARSE ERROR: Encountered "nulls" at line 1, column 26.
> Was expecting one of:
> "FROM" ...
> "," ...
>
> [Error Id: a7bd21b3-b46c-417d-a9d9-aa6d0378b0fc on centos-04.qa.lab:31010]
> (state=,code=0)
> {code}
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