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Exercise

Create a temp table

Find the Fortune 500 companies that have profits in the top 20% for their sector (compared to other Fortune 500 companies).

To do this, first, find the 80th percentile of profit for each sector with 

percentile_disc(fraction) 
WITHIN GROUP (ORDER BY sort_expression)

and save the results in a temporary table.

Then join fortune500 to the temporary table to select companies with profits greater than the 80th percentile cut-off.

Instructions 1/2
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  • Create a temporary table called profit80 containing the sector and 80th percentile of profits for each sector.
  • Alias the percentile column as pct80.
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