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Day3_SQL_Lab1

  • Create a table "BooksAuthors" containing two fields ( AuthorId, BookId )

CREATE TABLE BooksAuthors ( AuthorId INT NOT NULL, BookId INT NOT NULL, FOREIGN KEY (AuthorId) REFERENCES Authors(Id), FOREIGN KEY (BookId) REFERENCES Books(Id) );

  • Insert at least 5 records into the BooksAuthors table.

INSERT INTO BooksAuthors (AuthorId, BookId) VALUES (1,1), (2,2), (3,3), (4,4), (5,5);

  • Write a statement that will select the Country column from the Authors table.

SELECT Country FROM Authors;

  • Select all the different values from the Country column in the Authors table.

SELECT DISTINCT Country FROM Authors;

  • Write an SQL query to return only Authors whose last name begins with S.

SELECT * FROM Authors WHERE Name LIKE 'S%';

  • List the number of Authors in each country.

SELECT Country, COUNT (*) AS Number FROM Authors GROUP BY Country

  • Select all records from the Authors table, sort the result alphabetically by the column first name.

SELECT * FROM Authors ORDER BY name

  • Select all records from the Customers table, sort the result reversed alphabetically by the column last name.

SELECT * FROM Authors ORDER BY name DESC;

  • Select all records where the Title column has the value 'Great ' from Books table.

SELECT * FROM Books WHERE Title LIKE '%Great%'

  • Use the NOT keyword to select all records where Country is NOT "USA".

SELECT * FROM Authors WHERE NOT Country = 'USA'

  • Select all records where the country column has the value 'USA' or 'India' from Authors table

SELECT * FROM Authors WHERE country = 'USA' or country = 'India'

  • Select all records where the age column has the value BETWEEN 50 - 60 in Authors table.

SELECT * FROM Authors WHERE Age BETWEEN 50 and 60

  • Use INNER to return the requested items with customers id.

SELECT Books.Title FROM Books INNER JOIN Authors ON Books.Id = Authors.ID;

  • Use the MIN function to select the record with the smallest value of the Age column from Authors table.

SELECT MIN(Age) FROM Authors

  • Choose the correct JOIN clause to view all books and their authors

SELECT Authors.Name, Books.Title FROM Authors FULL JOIN Books ON Authors.ID = Books.Id

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