Including Comments in SQL Statements in MySQL

Q

How To Include Comments in SQL Statements in MySQL?

✍: FYIcenter.com

A

If you want to include comments in a SQL statement, you can first enter "--", then enter your comment until the end of the line. The tutorial exercise below shows you some good examples:

SELECT 'Hello world!' FROM DUAL; -- My first SQL statement! 

INSERT INTO links VALUES ('FYIcenter.com'); -- Top rated!

CREATE TABLE faq (
   id INTEGER, -- primary key
   title VARCHAR(80) -- FAQ title
);

⇒ Entering Character Strings in MySQL

⇐ Evaluating Expressions with SELECT Statements in MySQL

⇑ Introduction to SQL Basics in MySQL

⇑⇑ MySQL Database Tutorials

2018-04-12, 3085🔥, 0💬

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Entering Characters as HEX Numbers in MySQL
How To Enter Characters as HEX Numbers in MySQL? If you want to enter characters as HEX numbers, you can quote HEX numbers with single quotes and a prefix of (X), or just prefix HEX numbers with (0x). A HEX number string will be automatically converted into a character string, if the expression cont... 2018-03-31, 3551🔥, 0💬

Difference between CHAR and VARCHAR in MySQL
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Date and Time Data Types in MySQL
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Concatenating Character Strings in MySQL
How To Concatenate Two Character Strings in MySQL? If you want concatenate multiple character strings into one, you need to use the CONCAT() function. Here are some good examples: SELECT CONCAT('Welcome',' to') FROM DUAL; Welcome to SELECT CONCAT('FYI','center','.com') FROM DUAL; FYIcenter.com ⇒ E... 2018-04-07, 3216🔥, 0💬

Numeric Data Types in MySQL
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Entering Character Strings in MySQL
How To Include Character Strings in SQL statements in MySQL? If you want to include character strings in your SQL statements, you need to quote them in one of the following formats: Using single quotes. For example 'FYIcenter.com'. Using double quotes. For example "FYI Center". Using single quotes p... 2018-04-12, 3156🔥, 0💬

Evaluating Expressions with SELECT Statements in MySQL
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Including Comments in SQL Statements in MySQL
How To Include Comments in SQL Statements in MySQL? If you want to include comments in a SQL statement, you can first enter "--", then enter your comment until the end of the line. The tutorial exercise below shows you some good examples: SELECT 'Hello world!' FROM DUAL; -- My first SQL statement! I... 2018-04-12, 3086🔥, 0💬

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