Murachs MySQL My Guitar Shop Database Chapter 13

Murach’s MySQL My Guitar Shop Database Chapter 13

QUESTION  1
Write a script that creates and calls a stored procedure named test. This stored procedure should declare a variable and set it to the count of all products in the Products table. If the count is greater than or equal to 7, the stored procedure should display a message that says, “The number of products is greater than or equal to 7”. Otherwise, it should say, “The number of products is less than 7”.

QUESTION  2
Write a script that creates and calls a stored procedure named test. This stored procedure should use two variables to store (1) the count of all of the products in the Products table and (2) the average list price for those products. If the product count is greater than or equal to 7, the stored procedure should display a result set that displays the values of both variables. Otherwise, the procedure should display a result set that displays a message that says, “The number of products is less than 7”.

QUESTION  3
Write a script that creates and calls a stored procedure named test. This procedure should calculate the common factors between 10 and 20. To find a common factor, you can use the modulo operator (%) to check whether a number can be evenly divided into both numbers. Then, this procedure should display a string that displays the common factors like this:
Common factors of 10 and 20: 1 2 5

QUESTION  4
Write a script that creates and calls a stored procedure named test. This stored procedure should create a cursor for a result set that consists of the product_name and list_price columns for each product with a list price that’s greater than $700. The rows in this result set should be sorted in descending sequence by list price. Then, the procedure should display a string variable that includes the product_name and list price for each product so it looks something like this:
“Gibson SG”,”2517.00″|”Gibson Les Paul”,”1199.00″|
Here, each value is enclosed in double quotes (“), each column is separated by a comma (,) and each row is separated by a pipe character (|).

QUESTION  5
 Write a script that creates and calls a stored procedure named test. This procedure should attempt to insert a new category named “Guitars” into the Categories table. If the insert is successful, the procedure should display this message:
1 row was inserted.
If the update is unsuccessful, the procedure should display this message:
Row was not inserted – duplicate entry.

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