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SQL Coding Questions by Industry

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SQL Coding Questions by SQL Operations

Single table operations

SELECT, WHERE, AND, OR, ORDER BY, LIMIT

COUNT, SUM, AVERAGE, MIN, MAX, GROUP BY, HAVING

IN, BETWEEN, LIKE, CASE WHEN

Multi-table operations

INNER JOIN

OUTER JOIN

UNION, UNION ALL

WINDOW functions

AVG, SUM, MAX/MIN

ROW_NUMBER, RANK, DENSE_RANK

NTILE

LAG, LEAD

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SQL Coding Questions & Answers

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Multi-Table Operation: Lecture 3: UNION, UNION ALL


ID Title Level FTPR Lecture
46 Actors and customers whose last name starts with 'A' easy
32%
3.3
47 Actors and customers whose first names end in 'D'. easy
45%
3.3
57 Total number of actors (with UNION) easy
37%
3.3
87 Top song in the US and UK music medium
10%
3.3
94 Top 3 products vs. bottom 3 products ecommerce medium
6%
3.3
104 MAU: Monthly active users mobile easy
19%
3.3
129 Top 3 and bottom 3 courier ride sharing medium
10%
3.3
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