The avatar for @credmond
Charles Redmond
Public
Edited
Oct 17, 2023
5
Insert cell
Insert cell
customerFile = FileAttachment("customer.csv").csv({typed:true})
Insert cell
skdb = DuckDBClient.of({
customer: customerFile
})
Insert cell
skdb
SELECT first_name,last_name,
CASE active
WHEN 1 THEN 'ACTIVE'
ELSE 'NOT ACTIVE'
END
FROM customer
Insert cell
peopleFile = FileAttachment("People.csv").csv({typed:true})
Insert cell
battingFile = FileAttachment("Batting.csv").csv({typed:true})
Insert cell
collegeFile = FileAttachment("CollegePlaying.csv").csv({typed:true})
Insert cell
managersFile = FileAttachment("Managers.csv").csv({typed:true})
Insert cell
bbdb = DuckDBClient.of({
people:peopleFile,
batting:battingFile,
college:collegeFile,
managers:managersFile
})
Insert cell
bbdb
SELECT nameFirst,nameLast,birthCountry,
CASE
WHEN birthCountry = 'USA' THEN 'UNITED STATES'
WHEN birthCountry IS NULL THEN 'UNKNOWN'
ELSE 'INTERNATIONAL'
END birthPlace
FROM people
WHERE birthCountry != 'USA'
Insert cell
bbdb
SELECT nameFirst,nameLast,bats,throws,
CASE concat(bats,throws)
WHEN 'RR' THEN 'Bats Right, Throws Right'
WHEN 'LR' THEN 'Bats Left, Throws Right'
WHEN 'RL' THEN 'Bats Right, Throws Left'
WHEN 'LL' THEN 'Bats Left, Throws Left'
ELSE 'UNKNOWN'
END handedness
FROM people
WHERE throws IS NULL
Insert cell
bbdb
SELECT birthCountry
FROM people
WHERE birthCountry IS NULL
Insert cell
bbdb
SELECT playerID,teamID,yearID,H,AB,
CASE
WHEN AB = 0 THEN 'undefined'
ELSE H/AB
END avg
FROM batting
WHERE AB != 0
Insert cell
bbdb
SELECT playerID,
CASE count(DISTINCT schoolID)
WHEN 1 THEN 'one'
WHEN 2 THEN 'two'
WHEN 3 THEN 'three'
END CollegesAttended
FROM college
GROUP BY playerID
HAVING CollegesAttended = 'three'

Insert cell
bbdb
SELECT playerID,schoolID
FROM college
WHERE playerID = 'baumgro01'
Insert cell
bbdb
SELECT playerID,CASE(
SELECT count(DISTINCT schoolID)
FROM college
WHERE playerID = people.playerID
)
WHEN 0 THEN 'NO COLLEGE'
WHEN 1 THEN 'ONE COLLEGE'
WHEN 2 THEN 'TWO COLLEGES'
WHEN 3 THEN 'THREE COLLEGES'
END
FROM people
Insert cell
bbdb
SELECT playerID,
CASE
WHEN (SELECT count(*)
FROM managers
WHERE playerID = people.playerID) = 0 THEN 'NEVER MANAGED'
ELSE (SELECT count(*)
FROM managers
WHERE playerID = people.playerID)
END
FROM people
Insert cell
bbdb
SELECT *
FROM managers
WHERE playerID = 'acunaro01'
Insert cell

One platform to build and deploy the best data apps

Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.
Learn more