[teiid-issues] [JBoss JIRA] (TEIID-2675) Ensure that user defined aggregate functions don't require additional syntax

Ensure that user defined aggregate functions don't require additional syntax ---------------------------------------------------------------------------- Key: TEIID-2675 URL: https://issues.jboss.org/browse/TEIID-2675 Project: Teiid Issue Type: Quality Risk Components: Query Engine Affects Versions: 8.0 Reporter: Steven Hawkins Assignee: Steven Hawkins Fix For: 8.6 User defined aggregates require additional syntax if they look like simple functions. This is not ideal, but was not addressed initially due to the lack of effective rewrite support in the resolver and all of the logic that is built around the differentiation between Function and AggregateSymbol classes.