zhengshiJ opened a new pull request, #9703: URL: https://github.com/apache/incubator-doris/pull/9703
# Proposed changes Issue Number: close #xxx ## Problem Summary: Due to the current architecture, predicate derivation at rewrite cannot satisfy all cases, because rewrite is performed on first and then where, and when there are subqueries, all cases cannot be derived. So keep the predicate pushdown method here. eg. select * from t1 left join t2 on t1 = t2 where t1 = 1; InferFiltersRule can't infer t2 = 1, because this is out of specification. The expression(t2 = 1) can actually be deduced to push it down to the scan node. ## Checklist(Required) 1. Does it affect the original behavior: (No) 2. Has unit tests been added: (Yes) 3. Has document been added or modified: (No Need) 4. Does it need to update dependencies: (No) 5. Are there any changes that cannot be rolled back: (No) ## Further comments If this is a relatively large or complex change, kick off the discussion at [d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you chose the solution you did and what alternatives you considered, etc... -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
