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High-Level SQL Logic Question
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High-Level SQL Logic Question

EasySQL · PostgreSQL

Problem

A company acquired 100 new customers in January and 90 in February. Considering that the first quarter average was 100 new customers, how many customers did the company acquire in March?

Use the monthly_customer_acquisitions table and write a query that calculates the missing March value from the January and February records.

Output

  1. Return one row with a column named march_new_customers.
  2. Return the calculated number of customers acquired in March.

Schema

monthly_customer_acquisitions
ColumnTypeDescription
record_idPKINTUnique record identifier
month_startDATEFirst day of the acquisition month
quarter_labelVARCHAR(2)Calendar quarter label
new_customersINTNumber of customers acquired during the month
quarter_averageINTAverage monthly customer acquisitions for the quarter
Tablesmonthly_customer_acquisitions
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