Commit 9e533eb

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Understanding ORDER BY and RANK()

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Original file line number	Diff line number	Diff line change
`@@ -3,3 +3,11 @@ FROM bookings;`
`3`	`3`
`4`	`4`	`SELECT booking_date, amount_tipped, SUM(amount_tipped) OVER(PARTITION BY booking_date)`
`5`	`5`	`FROM bookings;`
	`6`	`+`
	`7`	`+SELECT booking_date, amount_tipped, SUM(amount_tipped)`
	`8`	`+OVER(PARTITION BY booking_date ORDER BY amount_billed)`
	`9`	`+FROM bookings;`
	`10`	`+`
	`11`	`+SELECT booking_date, amount_tipped, RANK()`
	`12`	`+OVER(PARTITION BY booking_date ORDER BY amount_tipped DESC)`
	`13`	`+FROM bookings;`

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