SQL Exercises: Show all the details of the winners with the first name Louis
From the following table, write a SQL query to retrieve the details of the winners whose first names match with the string ‘Louis’. Return year, subject, winner, country, and category.
Sample table: nobel_win
YEAR SUBJECT WINNER COUNTRY CATEGORY ---- ------------------------- --------------------------------------------- ------------------------- ------------ 1970 Physics Hannes Alfven Sweden Scientist 1970 Physics Louis Neel France Scientist 1970 Chemistry Luis Federico Leloir France Scientist 1970 Physiology Ulf von Euler Sweden Scientist 1970 Physiology Bernard Katz Germany Scientist 1970 Literature Aleksandr Solzhenitsyn Russia Linguist 1970 Economics Paul Samuelson USA Economist 1970 Physiology Julius Axelrod USA Scientist 1971 Physics Dennis Gabor Hungary Scientist 1971 Chemistry Gerhard Herzberg Germany Scientist 1971 Peace Willy Brandt Germany Chancellor 1971 Literature Pablo Neruda Chile Linguist 1971 Economics Simon Kuznets Russia Economist 1978 Peace Anwar al-Sadat Egypt President 1978 Peace Menachem Begin Israel Prime Minister 1987 Chemistry Donald J. Cram USA Scientist 1987 Chemistry Jean-Marie Lehn France Scientist 1987 Physiology Susumu Tonegawa Japan Scientist 1994 Economics Reinhard Selten Germany Economist 1994 Peace Yitzhak Rabin Israel Prime Minister 1987 Physics Johannes Georg Bednorz Germany Scientist 1987 Literature Joseph Brodsky Russia Linguist 1987 Economics Robert Solow USA Economist 1994 Literature Kenzaburo Oe Japan Linguist
Sample Solution:
-- This query selects all columns from the 'nobel_win' table.
SELECT *
-- Specifies the table from which to retrieve the data (in this case, 'nobel_win').
FROM nobel_win
-- Filters the rows to only include those where the 'winner' column starts with 'Louis '.
WHERE winner LIKE 'Louis %';
Output of the Query:
year subject winner country category 1970 Physics Louis Neel France Scientist
Code Explanation:
The said SQL query retrieves all columns from the 'nobel_win' table where the winner's name starts with "Louis" followed by any characters. The query will return all rows that match this criteria, resulting in a list of all Nobel Prizes awarded to winners whose name starts with "Louis". The LIKE operator is used to match a specific pattern, in this case it will match any name that starts with Louis followed by any characters. The '%' sign is a wildcard character that matches any sequence of characters.
Relational Algebra Expression:
Relational Algebra Tree:
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For more Practice: Solve these Related Problems:
- Write a SQL query to find all Nobel Prize winners whose first name starts with "John".
- Write a SQL query to retrieve details of winners whose first name contains "Marie".
- Write a SQL query to list all winners whose first name ends with "s".
- Write a SQL query to display Nobel laureates whose first name matches "Robert".
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Previous SQL Exercise: Details of the Prime Ministerial winners after 1972.
Next SQL Exercise: All winners in Physics for 1970 and Economics for 1971.
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