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SQL: Show all Nobel Prize winners from the year 1970, except for the subjects Physiology and Economics

SQL Basic Select Statement: Exercise-20 with Solution.

From the following table, write a SQL query to find the Nobel Prize winners in 1970 excluding the subjects of Physiology and Economics. Return year, subject, winner, country, and category.

Sample table: nobel_win


Sample Solution:

SELECT *
 FROM nobel_win 
   WHERE year=1970
    AND subject NOT IN('Physiology','Economics');

Output of the Query:

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   Literature Aleksandr Solzhenitsyn Russia     Linguist

Relational Algebra Expression:

Relational Algebra Expression: Show all the winners of nobel prize in the year 1970 except the subject Physiology and Economics.

Relational Algebra Tree:

Relational Algebra Tree: Show all the winners of nobel prize in the year 1970 except the subject Physiology and Economics.

Practice Online


Query Visualization:

Duration:

Query visualization of Show all the winners of nobel prize in the year 1970 except the subject Physiology and Economics - Duration

Rows:

Query visualization of Show all the winners of nobel prize in the year 1970 except the subject Physiology and Economics - Rows

Cost:

Query visualization of Show all the winners of nobel prize in the year 1970 except the subject Physiology and Economics - Cost

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Previous: From the following table, write a SQL query to combine the winners in Physics, 1970 and in Economics, 1971. Return year, subject, winner, country, and category.
Next: From the following table, write a SQL query to combine the winners in 'Physiology' before 1971 and winners in 'Peace' on or after 1974. Return year, subject, winner, country, and category.

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SQL: Tips of the Day

Can a foreign key be NULL and/or duplicate?

First remember a Foreign key simply requires that the value in that field must exist first in a different table (the parent table). That is all an Foreign key is by definition. Null by definition is not a value. Null means that we do not yet know what the value is.

Ref: https://bit.ly/3uVu3OS