Without rewriting this query, is there a way to force the query optimizer to better estimate the amount of resources required, e.g. with query hints?

by J.D.   Last Updated October 18, 2019 22:06 PM

Execution Plan with bad row estimate

I know there's a couple of alternate ways to write this query, but I'm more curious if there's another approach that I could use to improve the performance by helping guide the optimizer in the right direction? For example, can I use any kind of query hints / options to improve performance here?

Currently it runs in about 40 minutes and returns about 30,000 records.

Note: I'm also interested if there's new features in 2019 that apply here that don't apply in 2008 R2 (I know one big difference between the two is the Cardinality Estimator).



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