Problem Statement
What does EXPLAIN (or EXPLAIN ANALYZE) primarily show you?
Explanation
A plan reveals how the optimizer will execute your query: scans, seeks, joins, sort or hash steps, and the order they occur. It also shows cardinality estimates and relative costs.
With ANALYZE (or actual execution plans), you also see runtime counters like rows read and timing. Comparing estimates versus actuals is key to spotting poor statistics or non-SARGable predicates.
Code Solution
SolutionRead Only
EXPLAIN ANALYZE SELECT * FROM orders o JOIN customers c ON c.id=o.customer_id WHERE o.status='PAID';
