INNER JOIN
An insurance company that specializes in sports franchises has asked you to assess the geological hazards of cities hosting NBA teams. You believe you can get this information by querying the Teams
and Earthquakes
tables across the Earthquakes
and NBA Season 2017-2018
databases respectively. Your initial query will use EXISTS
to compare tables. The second query will use a more appropriate operator.
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Improving Query Performance in SQL Server
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-- Initial query
SELECT TeamName,
TeamCode,
City
FROM ___ AS t -- Add table
WHERE ___ -- Operator to compare queries
(SELECT 1
FROM ___ AS e -- Add table
WHERE t.City = e.NearestPop);