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Here, you'll find a collection of PDF-format notes covering SQL concepts. These notes are handwritten and contain concise definitions and examples for every command. The content is derived from various sources, including YouTube lectures, college lectures, and platform presentations.
The SQL cheat sheet provides you with the most commonly used SQL statements for your reference. You can download the SQL cheat sheet as follows: Download 3-page SQL cheat sheet in PDF format.
25 mar 2021 · A detailed article about SQL Cheat Sheet which includes keywords, data types, operators, functions, indexes, keys, and lots more. Download it in PDF format.
1 cze 2021 · Standard SQL Functions Cheat Sheet. TEXT FUNCTIONS. CONCATENATION. Use the || operator to concatenate two strings: SELECT 'Hi ' || 'there!'; -- result: Hi there! Remember that you can concatenate only character strings using. ||. Use this trick for numbers: SELECT '' || 4 || 2;
1 cze 2021 · Fetch all names that start with any letter followed by 'atherine': SELECT name FROM names WHERE name LIKE '_atherine'; Fetch all names that end with 'a': SELECT name FROM names WHERE name LIKE '%a'; USEFUL FUNCTIONS. Get the count of characters in a string: SELECT LENGTH('LearnSQL.com');-- result: 12 Convert all letters to lowercase: SELECT ...
Basic data selection. Formatting and manipulating the data. Aggregate functions. Group By. Where aggregate functions are used in conjunction with other fields, GROUP BY is used to group the data so that the aggregate still makes sense.
Our SQL Basics Resource offers a comprehensive overview of essential SQL concepts and commands—crucial for anyone looking to master database management and manipulation. Download our free SQL PDF and get started with SQL notes to help you understand the core of this essential query language.
