﻿ SQL: Who won the 1971 Nobel Prize for Literature? - w3resource

# SQL: Who won the 1971 Nobel Prize for Literature?

## SQL Basic Select Statement: Exercise-13 with Solution.

From the following table, write a SQL query to find the Nobel Prize winner in ‘Literature’ for 1970. Return winner.

Sample table: nobel_win

Sample Solution:

``````SELECT winner
FROM nobel_win
WHERE year = 1971
AND subject = 'Literature';
``````

Output of the Query:

```winner
Pablo Neruda
```

Relational Algebra Expression:

Relational Algebra Tree:

## Query Visualization:

Duration:

Rows:

Cost:

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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