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Update questions.sql #91

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12 changes: 11 additions & 1 deletion SQL Deep Dive/Comparison Operators/questions.sql
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Original file line number Diff line number Diff line change
@@ -1,21 +1,31 @@
-- How many female customers do we have from the state of Oregon (OR)?
/*
* Write your query here
SELECT count( * ) FROM customers
WHERE state='OR' AND gender='F'

*/

-- Who over the age of 44 has an income of 100 000 or more? (excluding 44)
/*
* Write your query here
SELECT firstname ,lastname, age,income FROM customers
WHERE age > 44 AND income >= 100000
*/

-- Who between the ages of 30 and 50 has an income less than 50 000?
-- (include 30 and 50 in the results)

/*
* Write your query here
SELECT firstname ,lastname, age,income FROM customers
WHERE (age >= 30 AND age <= 50 AND income <= 50000)

*/

-- What is the average income between the ages of 20 and 50? (Excluding 20 and 50)
/*
* Write your query here
SELECT avg(income) FROM customers
WHERE (age > 20 AND age < 50)

*/