Khurram Faraaz created DRILL-3597:
-------------------------------------
Summary: 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
Assignee: Chris Westin
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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