Add Concepts: Keywords

[Danielmnm1]

Description

• Added Concepts
• Added Keywords
• Added keywords.md describing the most important keywords in mysql and adding examples.

Issue Solved

Closes #4679

Type of Change

• Adding a new entry
• Updating the documentation

Checklist

• All writings are my own.
• My entry follows the Codecademy Docs style guide.
• My changes generate no new warnings.
• I have performed a self-review of my own writing and code.
• I have checked my entry and corrected any misspellings.
• I have made corresponding changes to the documentation if needed.
• I have confirmed my changes are not being pushed from my forked main branch.
• I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• I have linked any issues that are relevant to this PR in the Issues Solved section.

[CLAassistant]

All committers have signed the CLA.

[letsbuildanything]

@Danielmnm1
I've requested some changes. Please take a moment to address them. If you have any concerns or reasons to reject specific suggestions, feel free to discuss them.
Also, Please refer to style-guide. It is a general guide to entry standards, which will help reduce the number of potential edits that will further need to be made to your PR.

[letsbuildanything]

The description should be short, typically one sentence.

[letsbuildanything]

Suggested change

	CatalogContent: # Please use course/path landing page slugs, rather than linking to individual content items. If listing multiple items, please put the most relevant one first
	CatalogContent:

[letsbuildanything]

Suggested change

	- 'learn-example-course'
	- 'paths/example-path'
	- 'learn-sql'
	- 'paths/analyze-data-with-sql'
	- 'paths/data-science'
	- 'paths/data-science-foundations'

[letsbuildanything]

Suggested change

# MySQL Keywords

[letsbuildanything]

No need to include a title header. It is automatically provided by the metadata.

[letsbuildanything]

@Danielmnm1,
Please add two separate sections: ##Syntax and ##Example.
In the Example section, include a table with a small number of rows and columns. like:

CREATE TABLE products (
    name VARCHAR(50),
    price DECIMAL(10, 2),
    quantity_in_stock INT
);

INSERT INTO products (name, price, quantity_in_stock) VALUES
('Product A', 19.99, 10),
('Product B', 5.99, 20),
('Product C', 49.99, 5);

[letsbuildanything]

Please remove this section and include its content in the Example section.
Also, Please ensure the header and paragraph are separated by a line.

[letsbuildanything]

@Danielmnm1 It's been more than a week. Could you please make the requested changes as soon as possible?
Thanks!

[Danielmnm1]

I fixed the branch issue, please let me know your comments. Thank you.

[ishg-153]

@letsbuildanything Please check if your required changes are reflected.

[letsbuildanything]

@Danielmnm1 I've requested some more changes. Please take a moment to address them. If you have any concerns or reasons to reject specific suggestions, feel free to discuss them.

[letsbuildanything]

Combine and condense these statements. Remove the "Importance and Usage" section and ensure the whole statement is free of redundancy.

[letsbuildanything]

Please remove the entire Syntax section. I know I suggested adding it in the last review, and I apologize for any inconvenience this may cause.

Replace it with the following section:

Common MySQL Keywords

Here's a table of some commonly used MySQL keywords along with their definitions:

Keyword	Definition
SELECT	Retrieves data from one or more tables
FROM	Specifies the table(s) to retrieve data from
WHERE	Filters the results based on a condition
INSERT	Adds new data into a table
UPDATE	Modifies existing data in a table
DELETE	Removes data from a table
CREATE	Creates a new database object (e.g., table, index)
ALTER	Modifies the structure of an existing database object
DROP	Removes a database object
JOIN	Combines rows from two or more tables
GROUP BY	Groups rows that have the same values in specified columns
HAVING	Specifies a search condition for a group or an aggregate
ORDER BY	Sorts the result set in ascending or descending order
LIMIT	Specifies the maximum number of rows to return in the result set
UNION	Combines the result sets of two or more SELECT statements

Feel free to edit and improve as needed.

[letsbuildanything]

At the end, please refer to the official documentation of MySQL KEYWORDS for the comprehensive list.

[letsbuildanything]

I suggest combining the use cases of different keywords into one comprehensive example. Like this:

Example

The following example demonstrates the use of several MySQL keywords:

-- Create a new table
CREATE TABLE employees (
    id INT AUTO_INCREMENT PRIMARY KEY,
    first_name VARCHAR(50),
    last_name VARCHAR(50),
    position VARCHAR(100),
    salary DECIMAL(10, 2),
    hire_date DATE
);

-- Insert a new employee
INSERT INTO employees (first_name, last_name, position, salary, hire_date)
VALUES ('John', 'Doe', 'Software Engineer', 75000.00, '2024-05-25');

-- Select specific employees
SELECT first_name, last_name
FROM employees
WHERE position = 'Software Engineer';

- Feel free to edit and improve as needed.  
- Wherever possible, Please add the output section.