[teiid-issues] [JBoss JIRA] (TEIID-5569) Subquery unnesting with count aggregates

Subquery unnesting with count aggregates ---------------------------------------- Key: TEIID-5569 URL: https://issues.jboss.org/browse/TEIID-5569 Project: Teiid Issue Type: Bug Components: Query Engine Reporter: Steven Hawkins Assignee: Steven Hawkins Priority: Blocker Fix For: 11.1.2, 12.0, 11.2.2 A query such as: {code} SELECT pm1.g1.e1, pm1.g1.e2, /*+ MJ */ (select count(*) from pm1.g2 where e1 = pm1.g1.e1) FROM pm1.g1 {code} Where the subquery contains aggregates without a group by will produce a join plan such that a group by is added to account for the projection of the e1 value for the join predicate. However that will change the value from 0 to null for counts from pm1.g2 where there are no matching rows.