push Distinct nodes below Sort nodes
#2717
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max-hoffman
reviewed
Oct 24, 2024
| } | ||
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| func (f *factory) buildDistinct(child sql.Node) sql.Node { | ||
| if proj, isProj := child.(*plan.Project); isProj { |
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the one thing i would add is a quick // from => to docstring to make the tranform clearer
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This PR optimized queries like:
When there are many duplicate values in column
i, it is much more efficient to eliminate duplicates first, then sort the results.There are somewhat unrelated optimizations left as TODOs.
Optimize query: dolthub/dolt#8488