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Re:JIT-Compiling SQL Queries in PostgreSQL Using LLVM by mulmen on Monday February 22, 2021 @03:25PM (#26230074)
But the planner sums each step in the plan so isn’t a more complex plan already more expensive? Or is the addition of another step not adequately considered in that cost?
Re:JIT-Compiling SQL Queries in PostgreSQL Using LLVM by murkt on Tuesday February 23, 2021 @06:33AM (#26236108)
A more complex plan isn't already more expensive in a way that captures how much work the JIT will need to do. I think I'll need to write a separate blog post about that, with details and examples.