Question: For this question, use the PostgreSQL database for this course. Run an EXPLAIN command on the following query: SELECT * FROM customer WHERE city IN
For this question, use the PostgreSQL database for this course.
Run an EXPLAIN command on the following query:
SELECT
FROM customer
WHERE city IN
SELECT billingcity
FROM invoice
WHERE COUNTRY 'USA';
Which of the nodes in this query has the highest cost?
The hash JOIN
The second Seq Scan
The hash
The first Seq Scan
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