SQL Exercises: Names of Physics winners since 1950
From the following table, write a SQL query to find the Nobel Prize winners in the field of ‘Physics’ since 1950. Return 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 the 'winner' column from the 'nobel_win' table.
SELECT 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 a value greater than or equal to 1950
-- and the 'subject' column has the value 'Physics'.
WHERE year >= 1950
AND subject = 'Physics';
Output of the Query:
winner Hannes Alfven Louis Neel Dennis Gabor Johannes Georg Bednorz
Code Explaination:
The said SQL query retrieves the winner column from the nobel_win table, where the year of the award is greater than or equal to 1950 and the subject is "Physics". It will return all the rows that match these criteria, resulting in a list of winners of the Nobel Prize in Physics after 1950.
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 in "Chemistry" since 1950.
- Write a SQL query to retrieve Nobel Prize winners in "Medicine" since 1950.
- Write a SQL query to list Nobel Prize winners in "Literature" since 1950.
- Write a SQL query to identify Nobel Prize winners in "Peace" since 1950.
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Previous SQL Exercise: Display the year and subject of Dennis Gabor prize.
Next SQL Exercise: Details of Chemistry prize winners from 1965 to 1975.
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