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Repeat purchase rate — practice · DataDesk

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Advanced Interview question

Repeat purchase rate

What percentage of customers who ordered placed more than one order? Return repeat_rate_pct rounded to 2 decimals.

Tables

customers

customer_idinteger
namevarchar
cityvarchar
statevarchar
signup_datedate
emailvarchar
phonevarchar
referred_byinteger

order_items

order_idinteger
product_idinteger
quantityinteger
unit_priceinteger

orders

order_idinteger
customer_idinteger
order_datedate
statusvarchar
payment_methodvarchar

products

product_idinteger
product_namevarchar
categoryvarchar
priceinteger
stockinteger

Expected output

1 row with column repeat_rate_pct

Hints(0/2)

Solution

Unlocks after you solve it or after 3 submissions

SQL (DuckDB)

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Run your code to see the output here.