EXPLAIN parameters
EXPLAIN gives a window into the query plan. It has some optional parameters that provide additional information. You want to try out these optional parameters, focusing on the VERBOSE and ANALYZE parameters.
VERBOSE allows you to see the available columns at each step of the plan. ANALYZE computes actual run times in milliseconds. Which parameter's output do you find most useful?
Cet exercice fait partie du cours
Improving Query Performance in PostgreSQL
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
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