docs: include NestedLoopJoinExec metrics in EXPLAIN ANALYZE guide (issue #19045) #19106
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The metrics don’t seem to match the actual ones, is this PR AI-generated? |
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This update adds documentation for
NestedLoopJoinExecto the EXPLAIN ANALYZE/ metrics user guide. The operator recently gained a
selectivitymetric,and this PR documents its behavior along with the other join operators.
The new section explains:
NestedLoopJoinExecis used for (non-equijoins and cases where hashor sort-merge joins cannot be applied)
selectivitymetric (output_rows / input_rows)This helps users interpret nested-loop join behavior and understand join
selectivity during query analysis.
Related: #19045