How have American baby name tastes changed since 1920? Which names have remained popular for over 100 years, and how do those names compare to more recent top baby names? These are considerations for many new parents, but the skills you'll practice while answering these queries are broadly applicable. After all, understanding trends and popularity is important for many businesses, too!
You'll be working with data provided by the United States Social Security Administration, which lists first names along with the number and sex of babies they were given to in each year. For processing speed purposes, the dataset is limited to first names which were given to over 5,000 American babies in a given year. The data spans 101 years, from 1920 through 2020.
The Data
baby_names
baby_names
column | type | description |
---|---|---|
year | int | year |
first_name | varchar | first name |
sex | varchar | sex of babies given first_name |
num | int | number of babies of sex given first_name in that year |
-- Run this code to view the data in baby_names
SELECT *
FROM baby_names
WHERE year = 1920;
-- Use this table for the answer to question 1:
-- List the overall top five names in alphabetical order and find out if each name is "Classic" or "Trendy."
WITH cte AS (
SELECT
*,
COUNT(YEAR) OVER(PARTITION BY first_name) AS years_appeared
FROM
baby_names
)
SELECT
first_name,
SUM(num) AS sum,
CASE WHEN years_appeared >= 50 THEN 'Classic'
ELSE 'Trendy' END AS popularity_type
FROM cte
GROUP BY
first_name, years_appeared
ORDER BY
first_name ASC
LIMIT 5;
-- Use this table for the answer to question 2:
-- What were the top 20 male names overall, and how did the name Paul rank?
WITH cte AS (
SELECT
first_name,
sex,
SUM(num) AS sum
FROM
baby_names
GROUP BY
first_name, sex
)
SELECT
RANK() OVER(ORDER BY sum DESC) AS name_rank,
first_name,
sum
FROM
cte
WHERE sex = 'M'
ORDER BY
name_rank ASC
LIMIT 20;
-- Use this table for the answer to question 3:
-- Which female names appeared in both 1920 and 2020?
SELECT
first_name,
COUNT(*) AS total_occurrences
FROM
baby_names
WHERE
sex = 'F' AND
first_name IN (SELECT first_name FROM baby_names WHERE year = 1920) AND
first_name IN (SELECT first_name FROM baby_names WHERE year = 2020)
GROUP BY
first_name;