How to get the value of pi using MySQL's PI function

How to use MySQL's PI function to obtain the value of pi

Introduction:
Pi (π) is an important constant in mathematics, with an approximate value of 3.1415926. MySQL database provides a built-in function PI(), which can return the approximate value of pi. This article will introduce how to use MySQL's PI function to obtain the value of pi, and attach a code example.

Step 1: Create a database
First, we need to create a database for testing. You can use the following code to create a database named "test_pi" in MySQL:

CREATE DATABASE test_pi;
USE test_pi;

Step 2: Create a table
Next, we need to create a table in the database for storing pi values. surface. You can use the following code to create a table named "pi_value" in the database:

CREATE TABLE pi_value (
    id INT AUTO_INCREMENT PRIMARY KEY,
    value DECIMAL(10, 8)
);

Step 3: Insert the value of pi
Now, we can use the PI function to get the value of pi and insert it Insert into the "pi_value" table. You can use the following code to achieve this:

INSERT INTO pi_value (value) VALUES (PI());

Step 4: Query the value of pi
Finally, we can use the SELECT statement to query the value of pi. You can use the following code to achieve:

SELECT value FROM pi_value;

Full code example:

CREATE DATABASE test_pi;
USE test_pi;

CREATE TABLE pi_value (
    id INT AUTO_INCREMENT PRIMARY KEY,
    value DECIMAL(10, 8)
);

INSERT INTO pi_value (value) VALUES (PI());

SELECT value FROM pi_value;

Summary:
Using MySQL's PI function to obtain the value of pi is very simple, you only need to create a database and table, Then insert and query the value of pi. The PI function returns an approximation of pi, which is accurate enough in most cases. I hope this article will be helpful for using MySQL to get the value of pi!

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