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https://issues.apache.org/jira/browse/CALCITE-7595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18089816#comment-18089816
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Weihua Zhang commented on CALCITE-7595:
---------------------------------------
in winagg.iq
{code:java}
select * from emp;
+-------+--------+-----------+------+------------+---------+---------+--------+
| EMPNO | ENAME | JOB | MGR | HIREDATE | SAL | COMM | DEPTNO |
+-------+--------+-----------+------+------------+---------+---------+--------+
| 7369 | SMITH | CLERK | 7902 | 1980-12-17 | 800.00 | | 20 |
| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |
| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |
| 7566 | JONES | MANAGER | 7839 | 1981-02-04 | 2975.00 | | 20 |
| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |
| 7698 | BLAKE | MANAGER | 7839 | 1981-01-05 | 2850.00 | | 30 |
| 7782 | CLARK | MANAGER | 7839 | 1981-06-09 | 2450.00 | | 10 |
| 7788 | SCOTT | ANALYST | 7566 | 1987-04-19 | 3000.00 | | 20 |
| 7839 | KING | PRESIDENT | | 1981-11-17 | 5000.00 | | 10 |
| 7844 | TURNER | SALESMAN | 7698 | 1981-09-08 | 1500.00 | 0.00 | 30 |
| 7876 | ADAMS | CLERK | 7788 | 1987-05-23 | 1100.00 | | 20 |
| 7900 | JAMES | CLERK | 7698 | 1981-12-03 | 950.00 | | 30 |
| 7902 | FORD | ANALYST | 7566 | 1981-12-03 | 3000.00 | | 20 |
| 7934 | MILLER | CLERK | 7782 | 1982-01-23 | 1300.00 | | 10 |
+-------+--------+-----------+------+------------+---------+---------+--------+
(14 rows)
!ok
select * from dept;
+--------+------------+----------+
| DEPTNO | DNAME | LOC |
+--------+------------+----------+
| 10 | ACCOUNTING | NEW YORK |
| 20 | RESEARCH | DALLAS |
| 30 | SALES | CHICAGO |
| 40 | OPERATIONS | BOSTON |
+--------+------------+----------+
(4 rows)
!ok
{code}
it same as https://onecompiler.com/postgresql/44smkpfxb
> Support FILTER clause with window functions
> -------------------------------------------
>
> Key: CALCITE-7595
> URL: https://issues.apache.org/jira/browse/CALCITE-7595
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.42.0
> Reporter: Yu Xu
> Assignee: Yu Xu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.43.0
>
>
> Currently Calcite not support FILTER OVER syntax，but PostgreSQL support
> it：[https://www.postgresql.org/docs/current/sql-expressions.html]
> SQL
> {code:java}
> SELECT COUNT(*) FILTER (WHERE x > 5) OVER (PARTITION BY deptno) FROM t; {code}
> error
> {code:java}
> -- ERROR: SqlValidatorException: OVER must be applied to aggregate function
> {code}
> Maybe we can improve the filter over support.
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