Sometimes a SQL performs better when given an Optimizer hint. However in some scenarios it is not possible to modify the SQL (maybe it is
Category: SQL Query performance
….yes, that is correct. 🙂 You can apply an execution plan even if it has been aged out from your local Automatic Workload Repository (AWR).
At work I came across a query that was using correlated sub select and I thought it is worth sharing. I have seen many queries