Customer requesting the ability to make query planner always create
dependent joins.
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Key: TEIID-1335
URL:
https://issues.jboss.org/browse/TEIID-1335
Project: Teiid
Issue Type: Feature Request
Components: Server
Reporter: Debbie Steigner
Assignee: Steven Hawkins
Customer is finding that the query planner often chooses to use a non-dependent join
plan, even when cost statistics have been gathered on all source systems and a dependent
plan would perform much better.
I've showed them how to use option makedep to force a dependent join scenario.
However, it requires careful analysis of each query to setup the proper makedep
parameters, and may not be feasible when working with hibernate as the client.
Thus, they ask: is there any way to tell the query planner to always use dependent join
for every join, no matter what.
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