SQL Exercises: Display the Nobel prizes for 1970
From the following table, write a SQL query to find the Nobel Prize winner(s) for the year 1970. Return year, subject and winner.
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 specific columns 'year', 'subject', and 'winner' from the 'nobel_win' table.
SELECT year, subject, winner
-- 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 'year' column has the value 1970.
WHERE year = 1970;
Output of the Query:
year subject winner 1970 Physics Hannes Alfven 1970 Physics Louis Neel 1970 Chemistry Luis Federico Leloir 1970 Physiology Julius Axelrod 1970 Physiology Ulf von Euler 1970 Physiology Bernard Katz 1970 Literature Aleksandr Solzhenitsyn 1970 Economics Paul Samuelson
Code Explanation:
The above query in SQL that selects the "year", "subject" and "winner" columns from the 'nobel_win' table where the value of "year" column is 1970. The WHERE clause is used to filter the rows and only return the rows that match the condition specified in the WHERE clause.
Relational Algebra Expression:
Relational Algebra Tree:
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For more Practice: Solve these Related Problems:
- Write a SQL query to find Nobel Prize winners for the year 1971.
- Write a SQL query to retrieve Nobel Prize winners for the year 1980.
- Write a SQL query to list Nobel Prize winners for the year 1990.
- Write a SQL query to identify Nobel Prize winners for the year 2000.
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