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Grouping Aggregate Results (GROUP BY)

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Original file line number	Diff line number	Diff line change
`@@ -2,3 +2,7 @@ SELECT * FROM users`
`2`	`2`	`WHERE first_name LIKE 'Ma%';`
`3`	`3`
`4`	`4`	`SELECT COUNT(id) FROM locations;`
	`5`	`+`
	`6`	`+SELECT c.name, loc.street, COUNT(loc.id) AS num_locations FROM cities AS c`
	`7`	`+LEFT JOIN locations AS loc ON loc.city_name = c.name`
	`8`	`+GROUP BY c.name, loc.street;`

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