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Profiling Queries

Goose supports profiling queries via the EXPLAIN and EXPLAIN ANALYZE statements.

EXPLAIN​

To see the query plan of a query without executing it, run:

EXPLAIN ⟨query⟩;

The output of EXPLAIN contains the estimated cardinalities for each operator.

EXPLAIN ANALYZE​

To profile a query, run:

EXPLAIN ANALYZE ⟨query⟩;

The EXPLAIN ANALYZE statement runs the query, and shows the actual cardinalities for each operator, as well as the cumulative wall-clock time spent in each operator.