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SQL Handwritten Notes Repository: A collection of PDF notes covering SQL concepts with concise definitions and examples. Explore fundamental commands, date/time functions, joins, and more. Contributions welcome! Happy studying and coding!
SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now ».
Learning SQL eBook (PDF) Download this eBook for free. Chapters. Chapter 1: Getting started with SQL. Chapter 2: ALTER TABLE. Chapter 3: AND & OR Operators. Chapter 4: Cascading Delete. Chapter 5: CASE. Chapter 6: Clean Code in SQL.
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; -- result: 42.
1 maj 2023 · Here is my list of some of the best books to learn SQL, which is absolutely free. You can either download their PDF version for offline reading, or you can read them online. 1.
Free SQL Basics Resource! SQL notes covering syntax, SELECT, INSERT, UPDATE, DELETE, and more. Perfect for beginners and professionals.
1 cze 2021 · Check the documentation for your specific database. LIKE OPERATOR – PATTERN MATCHING Use the _ character to replace any single character. Use the % character to replace any number of characters (including 0 characters). Fetch all names that start with any letter followed by 'atherine': SELECT name FROM names WHERE name LIKE '_atherine';
