Vineet Garg created CALCITE-1583:
------------------------------------
Summary: Wrong results for query with correlated subqueries with
aggregate subquery expression
Key: CALCITE-1583
URL: https://issues.apache.org/jira/browse/CALCITE-1583
Project: Calcite
Issue Type: Bug
Reporter: Vineet Garg
Assignee: Julian Hyde
Following query produces wrong result:
{code} select * from depts where exists (select sum(empno) from emps where
depts.deptno = emps.deptno and 1=2) {code}
Expected Result:
{noformat}
deptno | name
--------+-----------
10 | Sales
20 | Marketing
30 | Accounts
(3 rows)
{noformat}
Actual results
{noformat} zero rows {noformat}
Calcite rewrites such queries into JOIN which ignores the fact that aggregate
functions such as {{sum}} always produce one row, effectively making {{EXISTS}}
predicate always true.
Same is the case with {{Scalar}} and {{IN}} sub-queries.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
